Species Diversity and Habitat Distribution of Fishes in Sharm El-Maiya Bay, Sharm El-Sheikh, Red Sea

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1 ATRNA (7), (): BY TE EGYPTAN SETY FR ENVRNMENTAL SENES PREEDNGS F TE SEND NTERNATNAL NFERENE N TE RLE F GENETS AND BTENLGY N NSERVATN F NATURAL RESURES, SMALA, EGYPT, JULY 9-, 7 Species Diversity and abitat Distribution of Fishes in Sharm El-Maiya Bay, Sharm El-Sheikh, Red Sea Magdy A. Alwany*, Mahmoud. anafy, Mohammed M. Kotb and Ali A-F A. Gab-Alla Department of Marine Science, Faculty of Science, Suez anal University, smailia, Egypt ABSTRAT The fish assemblages of different habitats in Sharm El-Maiya Bay, Sharm El-Sheikh, Red Sea, were examined by visual census technique. Fish communities were estimated for each different habitat (coral patches, seagrasses, muddy substrate and coral reefs). A total of fish species representing 98 genera were counted. oral reef habitat had the highest number of species ( species), while the muddy habitat had the lowest number ( species). The highest average abundance was recorded at coral patch habitat ( fish/ m ), with the lowest value at muddy habitat ( fish/ m ). Most individuals belonged to the Mullidae, followed by the Pomacentridae, haetodontidae, Labridae, Serranidae and Acanthuridae. The highest diversity of fishes was recorded on the coral reef areas. This habitat has nearly all fish families ( families). Sparidae and Mullidae were more abundant at seagrass habitats inside the Sharm El-Maiya Bay more than other habitats. orallivores were less abundant at the seagrass and muddy habitats than on fringing coral reefs and coral patches. n general, both the herbivores and invertebrate-feeder fishes are the most abundant in the Sharm El-Maiya Bay. They represent. % of total fish population in the study area. Key words: fish abundance, habitats, diversity, Red Sea, Egypt. NTRDUTN The distribution and abundance of coral reefs are mainly determined by the quality, diversity and availability of suitable habitat (Bouchon-Navarro, 98; Williams, 99) and the habitat preferences of incoming larvae (Booth and Wellington, 998). Therefore, fish community parameters are usually correlated with specific features. For example, fish richness, abundance (Bell and Galzin, 98; rmond et al., 99; Lewis, 998) and diversity (rmond et al., 99) are generally correlated with live coral cover. ertain fish species or assemblages are characteristic for certain habitats (e.g. Bell and Galzin, 98; armelin-vivien, 989; Alwany, 997; Mclanahan and Arthur, ; Garpe and Öhman, ). They may be selective or non-selective, obligate, facultative or opportunistic in relation to their habitat (Bergman et al., ). Many reef fishes associate with particular microhabitats within the main habitats (Sale, 99), although the importance of such associations in determining larger-scale patterns of distribution and abundance appears to vary widely among species (Munday, ). The Red Sea has lower reef fish species diversity than the greater part of the Western ndo-pacific, probably as a consequence of its relatively recent origin. Sharm El-Maiya Bay is a semi-closed bay with a limited water circulation and acting as sediment trap for sediment and organic particles of various origins. The bay is dominated by a number of recently built hotels and recreational facilities. Sharm El-Maiya Bay suffered for a long time from being use as a mooring area for all the diving vessels in Sharm El-Sheikh. While the Red Sea fish fauna is taxonomically quite well known compared with other parts of the tropical ndo-pacific cean, the structure of coastal fish communities has been less well * orresponding author: magdy.elalwany@yahoo.com Tel: + 99 investigated (Khalaf and Kochzius, ). The present study investigates the fish communities of four different shallow-water habitats in Sharm El-Maiya Bay to obtain ecological information to facilitate a proper management of the Northern Red Sea. MATERALS AND METDS Study area The coastal area of Sharm El-Sheikh has many sharms and bays, which interrupt the fringing reefs along the coastal-line and Sharm El-Maiya Bay is one of Sharm El-Sheikh bays. Sharm El-Maiya Bay is located in Southern Sinai area approximately º 7 E and 7º N. The perimeter of the bay is about m with 8 by m main dimensions and surface area of approximately. km and a maximum depth of m. The Bay has sandy, muddy and rocky shores with different marine habitats (Gab-Alla, ). The research was conducted at four different habitats (coral patches, seagrasses, muddy substrate and coral reefs) of Sharm El-Maiya Bay (Fig. and Table ). These habitats represented the Northern Red Sea Bays, were chosen to observe the fish composition of each habitat and show the differences between them. Data were collected between March and April 999. Fish abundance The fish communities in shallow water habitats inside the Sharm El-Maiya Bay was examined by using visual censuse, which is the most non-destructive method to quantify fish abundance (Sale, 98). The species were counted visually along m long, m wide and m high transects ( x x = m ) laid parallel to the shoreline (three transects in each habitat with three replicates for each transect). Fish communities were

2 Species diversity and habitat distribution of fishes in Sharm El-Maiya Bay Figure (): Map of Sharm El-Sheikh area showing the location of Sharm El-Maiya Bay and the positions of the different habitats. estimated for each different bottom habitat, i.e. coral patches, seagrasses, muddy substrate and coral reefs, in the whole bay area. Data analysis The data were analyzed statistically using PRMER (V.; larke and Gorley, ). To compare fish diversity among different habitats, three diversity indices were calculated based on the abundance of fishes: species richness D (Margalef, 98); Shannon [log e ] (Shannon and Weaver, 99); and Pielou s evenness J (Pielou, 99). We used analyses of variance (ANVA) SPSS software (SPSS, ). RESULTS Species diversity and fish abundance The species recorded in each habitat inside the Sharm El-Maiya Bay are listed in Table. A total of fish species representing 98 genera were counted. oral reef habitat had the highest number of species ( species), while the muddy habitats had the lowest number ( species). The highest average abundance was recorded at coral patch habitat ( fish/ m ), with the lowest value at muddy habitat ( fish/ m ). The most individuals belonged to the Mullidae (7.9 %, species), follow by the Pomacentridae (. %, species), haetodontidae (. %, 8 species), Labridae (. %, 8 species), Serranidae (. %, species) and Acanthuridae (.9 %, 8 species). The number of species varied highly significantly between the four habitats (P <.), and the number of individuals also differed significantly between habitats (P =.7). Average species richness ranged from. at muddy habitats to.9 at coral reef habitat. The highest evenness index (J ) was recorded at coral reef habitat (.89), while the muddy habitat yielded the lowest value (.). Average Shannon-Wiener diversity ( ) varied between. at muddy habitat and.8 at coral reef habitat (Table and Fig. ). abitat distribution The highest diversity of fishes was recorded on the coral reef areas. This habitat had all fish families ( families), except one family, Anthennariidae, which is 8

3 Alwany et al. Table (): Description of the four habitats chosen for the present study. abitat Position Depth (m) oral patches Seagrasses Muddy oral Reefs 7º N º 7 9 E 7º N º 7 E 7º N º 7 E 7º N º 7 9 E Structural complexity - igh.- Medium - Low.- igh Structural components - rich in corals and algae - rich in echinoderms - many holes - few rocks and stones - rich in algal communities - hotel rubbish is low - low rocks and stones - no corals and few algae - very turbid water - rich in hotel rubbish - rich in rock and stones - well developed corals - high tourism activities - strong wave actions Table (): The recorded abundance (no. of individuals m ) of the different fish species found at each habitat in Sharm El- Maiya Bay with trophic categories based on field observations (: corallivore; D: detritivore; : herbivore; : invertebrate-feeder; F: invertebrate and fish-feeder; : omnivore; P: piscivore; : planktivore). Fish species Dasyatididae Taeniura lymma Synodontidae Synodus variegates Saurida gracilis Muraenidae Gymnothorax Siderea grisea Belonidae Tylosurus choram emiramphidae emiramphus far yporhamphus gambarur Fistulariidae Fistularia commersonii Syngnathidae ippocampus histrix Trachyhamphus orythoichthys schultzi Anthennariidae Antennarius coccineus olocentridae Myripristis murdjan Adioryx ruber Flammeo sammara Scorpaenidae Scorpaenopsis diabolus Synanceia verrucosa Pterois volitans P. radiate Serranidae ephalopholis argus. hemistiktos. miniata Epinephelus fasciatus Anthias squamipinnis A. taeniatus Grammistidae Grammistes sexlineatus Priacanthidae Priacanthus hamrur irrhitidae irrhitus pinnulatus Paracirrhites forsteri Pseudochromidae Pseudochromis flavivertex P. fridmani Pseudoplesiops auratus arangidae arangoides bajad. fulvogutatus aranx melampygus oral oral trophic Seagrass Muddy patches reefs categories 8 P P F P P F P F F F F F F F F P F F F F F F Lutjanidae Lutjanus ehrenhergi L. fulviflamma L. kasmira L. coeruleolineatus L. argentimaculatus aesionidae aesio lunaris. suevicus Pterocaesio chrysozona Lethrinidae Lethrinus harak L. mahsenoides L. mahsena L. nebulosus L. lethrinus Monotaxis grandoculis Sparidae Rhabdosargus haffara R. sarba Acanthopagrus bifasciatus Diplodus noct Soleidae Pardachirus marmoratus Mullidae Parupeneus forsskali P. cyclostomus Mulloides flavolineatus M. vanicolensis Echeneididae Echeneis naucrates Mugilidae renimugil crenilabis edalechilus labiosus Sphyraenidae Sphyraena jello Atherinidae Atherinomorus lacunosus Apogonidae Apogon aureus A. kallopterus A. annularis A. bifasciatus heilodipterus Pomacentridae Abudefduf saxatilis A. sexfasciatus A. sordidus Amblyglyphidodon hromis caerulea. dimidiata hrysiptera annulata F F F F F, F F F F D D P,,, 8

4 Species diversity and habitat distribution of fishes in Sharm El-Maiya Bay. unimaculata Dascyllus aruanus D. marginatus D. trimaculatus Neoglyphidodon melas Plectroglyphidodon P. leucozona Pomacentrus albicaudatus P. aquilus P. sulfureus P. trichourus P. trilineatus Stegastes nigricans Labridae Anampses lineatus A. meleagrides Bodianus anthioides heilinus fasciatus. lunulatus. undulatus oris aygula Epibulus insidiator Gomphosus coeruleus alichoeres hortulanus. scapularis emigymnus fasciatus Labroides dimidiatus Larabicus quadrilineatus Novaculichthys taeniourus Pseudocheilinus hexataenia Pseudodax moluccanus Thalassoma rueppellii Scaridae etoscarus bicolor hlorurus gibbus. sordidus ipposcarus harid Scarus collana S. ferrugineus S. frenatus S. fuscopurpureus S. ghobban S. niger S. psittacus stistidae stracion cyanurus. cubicus Tetrosomus gibbosus haetodontidae haetodon auriga. austriacus. fasciatus. melannotus. paucifasciatus. semilarvatus. trifascialis eniochus intermedius Pomacanthidae entropyge multispinis Pomacanthus imperator Pygoplites diacanthus Acanthuridae Acanthurus gahhm A. nigrofuscus A. sohal tenochaetus striatus Naso lituratus N. unicornis Zebrasoma desjardinii Z. xanthurum Siganidae Siganus rivulatus S. argenteus S. luridus S. stellatus Balistidae Balistapus undulates Sufflamen albicaudatus Rhinecanthus assasi Balistoides viridescens ,,,,,, F, F D, F donus niger Tetraodontidae Arothron diadematus A. hispidus A. stellatus Diodontidae Diodon hystrix aemulidae Plectorhynchus gaterinus P. pictus 9 oral Reef M uddy Seagrass oral Patch Species richness (D) Evenness (J ) Shannon-Wiener ( ) Figure (): Fish community parameters (species richness, diversity and evenness) of different habitats at Sharm El- Maiya Bay. represented only in seagrass habitat by one species (Antennarius coccineus). Two groups, Sparidae and Mullidae, were more abundant at seagrass habitats inside the Sharm El-Maiya Bay comparing with other habitats. Two species of emiramphidae (emiramphus far and yporhamphus gambarur) are abundant in the seagrass habitats, where they feed on floating seagrass leaves, crustaceans and small fishes. oral patches habitat had highest number of fishes. This was due to large numbers of one Mullidae species (Parupeneus forsskali, being 9 fish/ m ). The poorest area in fish abundance and diversity was the muddy habitat. This habitat had only species (Table ), belonging to four families (Belonidae, Scorpaenidae, Mugilidae and Tetraodontidae). Abundance of trophic groups The total abundance of the various trophic groups at different habitats revealed patterns connected with the benthic substrate and physical parameters of these habitats. orallivores were less abundant at the seagrass and muddy habitats than on fringing coral reefs and coral patches. n general, both the herbivores and invertebrate-feeder fishes are most abundant in Sharm El-Maiya Bay. They represent. % of total fish population in the study area (herbivores. % and invertebrate-feeders.8 % of the total fish population). The piscivores and detritivores fishes were the lowest abundant fish trophic group (piscivores. % and detritivores.8 % of the total fish population). The fish feeds on planktons () and invertebrates and small fishes (F) were represented by 8. and 7.9 % F F 8

5 Alwany et al. Table (): Summary of diversity indices and characteristics at each habitat in Sharm El-Maiya Bay. Number of species Number of individuals Species richness (D) Evenness (J ) Shannon-Wiener ( ) oral patches Seagrass Muddy... oral reefs respectively. minivores were relatively less abundant (. %). orallivores tended to be less abundant inside the Bay, where represented. % of the total fish population. DSUSSN n Sharm El-Maiya Bay, species diversity and habitat distribution of different trophic group of fishes were examined in relation to the different habitats and benthic communities. Sharm El-Maiya Bay is ecological valuable due to its role as the nursery ground for some commercially valuable fishes, and presence of some ecologically sensitive ecosystem, i.e. segrass and coral patches ecosystems. verall, our results indicate that the type of habitats have the most dramatic effect on nearshore fish distributions and abundances in Sharm El- Maiya Bay. Larval and juvenile recruitment in reef fish communities have an important role in determining the structure and stability of these communities. Settlement is influenced by habitat selection for substrate types (Williams and Sale, 98), and many reef fish species prefer to settle on live corals (Booth and Beretta, ). anafy and Kotb (999) reported that the larvae of Pomacentridae were the highest abundant group of fishes in the coral reef in Sharm El-Maiya Bay. ur results confirm the previous finding, where the Pomacentridae represented. % of the total fish population, belonging to species. n addition, Jones (997) found that juvenile growth and survival may be substantially affected by the structure of the habitat. omparing with the available data reported by Ahmed (99) taken during the same month of 99, the relative abundance of fish juveniles increased sharply. owever it is very difficult to give a certain reason for this result and it is questionable if it is related to a recovery in the bay environment. f so, it could be concluded that the value of the bay as a nursery ground for fish juveniles is increasing. Gab-Alla () reported that the seagrass meadow in the Sharm El-Maiya Bay has species of seagrasses (alodule uninervis,. ovalis and alophila stipulacea). Also he mentioned that the leaves of these species were nearly free from epiphytes, which many fishes feed on it. erbivores represented by. % of the total fish population in the present study. But it is surprising that most fishes recorded in the seagrass habitat were omnivore fishes, and the herbivore fishes mainly recorded at the coral and coral patches habitats (where the most herbivores feeds on turf algae on the hard substrate of this habitats). Planktivore fishes dominate the fish community on coral reefs in the Gulf of Aqaba (Khalaf and Kochzius, ). This finding corresponds with studies in Sri Lanka, the Great Barrier Reef, New aledonia and the Gulf of Mexico (Williams and atcher 98; Öhman et al., 997; Pattengill et al., 997). n the Sharm El-Maiya Bay, the planktivores (8. %) represented the third trophic categories, where it comes after herbivores (. %) and invertebrate-feeders (.8 %) of the total fish population. The proportion of species belonging to particular feeding guilds is different between the four habitats in Sharm El-Maiya Bay, also differs somewhat from habitats in the ndian and Pacific ceans. The contribution of planktivores species to fish assemblages in the Red Sea seems to be high in comparison to other coral reefs in the world, whereas piscivores play only a minor role (Khalaf and Kochzius, ). Aamer et al. () reported that the abundance of total zooplankton was higher inside (7 individuals/m ) than outside (7 individuals/m ) the Bay. This finding give the reason; why many Planktivore species were found inside the Sharm El-Maiya Bay. The reduced abundance of corallivores in seagrass and muddy habitats than on fringing coral reefs and coral patches is not surprising, since these fishes and their larae and juveniles are strongly associated with live corals (Bouchon-Navaro et al., 98; Jennings et al., 99; Öhman and Rajasuriya, 998; Khalaf and Kochzius, ; Alwany, ; Alwany and Stachowitsch, 7). n Sharm El-Maiya Bay, the percentage of corallivore fishes is only about one third of the normal fringing reefs outside the Bay. This might be due to low diversity of the scleractinian corals inside the Sharm El-Maiya Bay. n conclusion, the fish communities at the Sharm El- Maiya Bay were different between the investigated habitats. ur field results, however, demonstrated that the Sharm El-Maiya Bay is ecological valuable as nursery ground for some commercially valuable fishes and the diversity of habitats inside the Bay. Management for the protection the marine resources inside the Bay is therefore needed urgently. Ras Mohammed National Park provides important baseline data for intensive research and conservation of the Sharm El-Sheikh areas, especially Sharm El-Maiya Bay. 87

6 Species diversity and habitat distribution of fishes in Sharm El-Maiya Bay AKNWLEDGMENTS We thank Prof. S. El-Etreby, Dr. M. El-Sherbiny and Dr. M. Aamer for their suggestions and encouragement in planning this study. This work would not have been possible without the kind assistance of the Department of Marine Science, Suez anal University, smailia, Egypt. The present work was supported by the Egyptian Environmental Affairs Agency (EEAA). REFERENES AAMER, M.A., M.M. EL-SERBNY, A.F.A. GAB-ALLA, AND M.K. MAMMED.. Studies on the ecology of zooplankton standing crop of Sharm El-Maiya Bay, Sharm El-Sheikh, Northern Red Sea, Egypt. ATRNA ():7-8. AMED, A Ecological and biological studies on juvenile fishes in South Sinai. M.Sc. Thesis, Marine Science Department, Faculty of Science, Suez anal University. ALWANY, M.A Ecological and biological studies on some coral reef fishes in South Sinai (Red Sea- Gulf of Aqaba). M.Sc. Thesis. Suez anal University, smailia, Egypt. ALWANY, M.A.. Ecological aspects of some coral reef fishes in the Egyptian coast of the Red Sea. PhD. Dissertation, University of nnsbruck, nnsbruck, Austria,. ALWANY, M.A., E. TALER, AND M. STAWTS. Territorial behaviour of Acanthurus sohal and Plectroglyphidodon leucozona on the fringing Egyptian Red Sea reefs. Environmental Biology of Fishes Volume 7:-. ALWANY, M.A., AND M. STAWTS. 7. Distribution and diversity of six common reef fish families along the Egyptian coast of the Red Sea. Journal of Fisheries and Aqautic Science ():-. BELL, J.D.,AND R. GALZN. 98. nfluence of live coral cover on coral reef fish communities. Marine Ecology Progress Series :-7. BERGMAN, K.., M.. ÖMAN, AND S. SVENSSN.. nfluence of habitat structure on Pomacentrus sulfurous. A western ndian cean reef fish, Environmental Biology of Fishes. 9:-. BUEN-NAVAR, Y., AND M. L. ARMELN-VVEN. 98. Quantitative distribution of herbivorous reef fishes in the Gulf of Aqaba (Red Sea). Marine Biology :79-8. BRK, V.E. 9.A preliminary report on a method of estimating reef fish populations. Journal of Wildlife Management 8:97-8. ALEY, M.J. 99. Reef-fish community structure and dynamics: an interaction between local and larger scale. Marine Ecology Progress Series 9:9-9. ALEY, M.J., M.. ARR, M.A. SR, T.P. UGES, G.P. JNES, AND B.A. MENGE. 99. Recruitment and the local dynamics of open marine populations. Annual Review of Ecology and Systematics 7:77-. DERTY, P.J. 99. Spatial and temporal patterns in recruitment. n: Sale, P.F. (ed.) The ecology of fishes on coral reefs, Academic Press, San Diego. DNE, T.J. 98. Patterns in the distribution of coral communities across the Great Barrier Reef. oral Reefs :9-7. GAB-ALLA A. A-F. A.. Ecological status of the seagrass community in Sharm El-Maiya Bay (Gulf of Aqaba, Red Sea) after oil pollution in 999. Journal of King Abdulaziz University, Marine Science ():-9. GARPE, K.., AND M.. ÖMAN.. oral and fish distribution patterns in Mafia sland Marine Park.Tanzania: fish-habitat interactions, ydrobiologia 98:9-. GLADFELTER,W.B., J.. GDEN, AND E.. GLADFELTER. 98. Similarity and diversity among coral reef fish communities. a comparison between tropical western Atlantic (Virgin slands) and tropical central Pacific (Marshall slands) patch reefs, Ecology :- 8. GLYNN, P.W., J.E.N. VERN, AND G.M. WELLNGTN. 99. lipperton Atoll (eastern Pacific). oceanography, geomorphology, reef-building coral ecology and biogeography, oral Reefs :7-99. GLDMAN, B., AND F.. TALBT. 97. Aspects of the ecology of coral reef fishes. n: Jones,.A., Endean, R. (ed.), Biology and geology of coral reefs, Volume, biology, Academic Press, New York. GREAU, T.F. 99. The ecology of Jamaican coral reefs.. Species composition and zonation, Ecology :7-9. GUTÉRREZ, L abitat selection by recruits establishes local patterns of adult distribution in two species of damselfishes. Stegastes dorsopunicans and S. planifrons, ecologia :8-77. ANAFY, M.., AND M.M. KTB Environmental impact assessment and data base study of Sharm El- Maiya Bay, Sharm El-Sheikh, Red Sea. A report submitted to the Egyptian Environmental Affairs Agency (EEAA). ARMELN VVEN, M.L mplications of feeding specialization on recruitment processes and community structure of butterfly fishes. Environmental Biology of Fishes, (-):-. ARMELN VVEN, M.L., AND Y. BUN-NAVAR. 98. Trophic relationships among chaetodontid fishes in the Gulf of Aqaba (Red Sea). proceedings of the th nternational oral Reef Symposium :7-. ARMELN-VVEN, M.L., J. G. ARMELN,. AUVET,. DUVAL, R. GALZN, P. LEJEUNE, G. BARNABÉ, F. BLAN, R. GEVALER, J. DULER, AND G. LASSERRE. 98. Evaluation visuelle des peuplements et populations de poisons. methods et problemes, Review of Ecology (Terre Vie) :8-9. AWKNS, J.P., AND. M. RBERTS. 99. The growth of coastal tourism in the Red Sea. present and possible future effects on coral reefs, Ambio, :- 8. ATT, R.W., AND D. W. STRASBURG. 9. Ecological relationships of the fish fauna on coral reefs of the 88

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8 ATRNA (7), (): BY TE EGYPTAN SETY FR ENVRNMENTAL SENES PREEDNGS F TE SEND NTERNATNAL NFERENE N TE RLE F GENETS AND BTENLGY N NSERVATN F NATURAL RESURES, SMALA, EGYPT, JULY 9-, 7 تعدد الا نواع وتوزيع البيي ات للا سماك فى خليج شرم الميه شرم الشيخ البحر الا حمر مجدى عبدالمجيد العلوانى محمود حسن حنفى محمد محمود عباس قطب على عبدالفتاح على جاب االله قسم علوم البحار آلية العلوم جامعة قناة السویس الا سماعيلية مصر الملخص العربى تمت هذه الدراسة للتع رف عل ى التعددی ة النوعي ة للا س ماك ف ى أربع ة بيي ات مختلف ة ف ى خل يج ش رم المي ه وال ذى یق ع ف ى المدخل الري يسى لمدینة شرم الشيخ. خليج شرم الميه یعتب ر خل يج مغل ق وتط ل علي ه العدی د م ن المنتجع ات ال سياحية حي ث أس تخدم ولفترة طویلة آمرسى لمعظم المراآب السياحية فى منطقة شرم الشيخ. ت م عم ل ه ذه الدراس ة ف ى بيي ات مختلف ة وه ى بيي ة ال شعاب المبعث رة وبيي ة الح شاي ش والبيي ة الطيني ة وبيي ة ال شعاب المتلاص قة. م ن خ لال ه ذه الدراس ة ت م التع رف عل ى ن وع س مكى والت ى تمث ل 98 ج نس س مكى. حي ث وج د أن بيي ة ال شعاب المتلاصقة آانت تحوى أآثر عدد من الا نواع ( نوع سمكى) بينما البيي ة الطينية آان ت أقله ا ( أن واع س مكية). وآ ذلك وج د أن أآثر متوسط لا عداد الا سماك تم تسجيله فى بيي ة الشعاب المبعثرة ( سمكة لكل متر مكعب) وأن أق ل متوس ط ت م ت سجيله فى البيي ة الطينية ( سمكة لكل متر مكعب). ووج د آ ذلك أن أغل ب الا س ماك تنتم ى لعاي ل ة أس ماك الميولي دى (البرب ونى) ث م تليها أسماك عاي لة البوماسنتيریدى (العذراء) ثم أسماك الكيتودونتيدى (الفراشة) ثم أسماك اللبریدى (العروسة) ثم أسماك ال سرلنيدى (القشر) وا خيرا أسماك عاي لة الا آانسيدى (الجراح). أعلى تن وع للا س ماك وج د ف ى بيي ة ال شعاب المرجاني ة المتلاص قة حي ث ت ضم هذه البيي ة تقریبا جميع عاي لات الا س ماك ال سباریدى (ال دنيس) والميولي دى (البرب ونى) وه ى أآث ر الع اي لات وف رة داخ ل خل يج ش رم الميه أآثر منها فى البيي ات الا خرى. الا سماك ا آلات الشعاب یك ون ع ددها أق ل ف ى بيي ة الح شاي ش والبيي ة الطيني ة عنه ا ف ى البيي ات الا خرى. ا آلات الحشاي ش واللافقاریات تكون أآثر عددا حيث تمثل %. بينما تعد ا آلات الا سماك والطين أقلها فى خليج شرم الميه. 9