Fish classification by deepak rawal


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Fish classification by deepak rawal

  1. 1. Presentation by- Deepak Rawal Assistant ProfessorMohanlal Sukhadia University Udaipur India
  3. 3. Superclass- Pisces General characters• Paired pectoral and pelvic fins• Respiration by gills• Heart 2 chambered• Poikilothermic• Lateral line system• Cranial nerves 10 pairs• Study of fishe- Ichthyology• Body covered with scales mostly
  4. 4. Class- placodermii• Bony armour/plate skinned• Jaws• Extinct class• Two order• 1 Arthrodiriformes• 2 Antiarchiformes
  5. 5. Order- Arthrodiriformes• Armour of head and trunk with movable joint• marine• Example - Dinichtyes
  6. 6. Order- Antiarchiformes• Pectoral fins long• Fresh-water• Example- pterychtyes
  7. 7. class-Chondrichtyes• Also called elasmobranchi• Operculum=gill cover absent• Cartilagenous endoskeleton• Heterocercal tail• Pelvic fins with clasper in male• Skin with placoid scales• Mouth on ventral side• Cones absent• Ampullae of lorenzini present• Cloaca present
  8. 8. . Class-Chondrichtyes Subclass-selachi Subclass-holocephliOrder-squaliformes Order-rajiformes
  9. 9. Order-Squaliformes• Also called pleurotremata• Gill-slits lateral 5-7 pairs• Spiracle small• Example- scoliodon(dogfish)
  10. 10. Order-Rajiformes• Also called hypotremata• Body dorso ventrally flattened• 5 pair of gill slits ventral• Large pectoral fin• Spiracle large• Example- trygon(sting ray)
  11. 11. Subclass-Holocephali• No spiracle• Single gill opening on either side covered by fleshy operculum• Isocercal tail• Single nasal opening• Example- chimaera(hydrolagus)
  12. 12. Class-Osteichtyes• Bony endoskeleton• Gills not more than 4 pairs• operculum=gill cover present• Homocercal or diphycercal or prptocercal tail• Terminal mouth• Cloaca absent• Swim bladder present• Cycloid or ctenoid or ganoid scale• Cones present
  13. 13. . Class-osteichtyesSubclass-sarcopterygii Subclass-actinopterygii Superorder-chondostei Superorder-holostei Superorder-teleostei
  14. 14. . Subclass-sarcopterygiiOrder-crossopterygii order-dipnoi
  15. 15. Order-Crossopterygii• Caudal fin 3 lobed• Living fossil• Lobe-finned fishes• Example- latimeria
  16. 16. Order-Dipnoi• Also called lung fishes• protocercal tail• Air bladder lung like• Breath on land by air bladder which acts as lungs• Example- protopterus(african lung fish)
  17. 17. Protopterus
  18. 18. Superorder-chondrosteiOrder-polypteriformes Order-acipenseriformes
  19. 19. Order-polypteriformes• Rhomboid ganoid scales• Dorsal fin of 8 or more finlets• Example- polypterus(bichir)
  20. 20. Order-Acipenseriformes• Scaleless• Barbels on ventral side below mouth• example- acipenser(sturgeon)
  21. 21. Superorder-holosteiOrder-amiiformes Order-semionotiformes
  22. 22. Order-Amiiformes• Snout rounded• Long dorsal fin• Cycloid scale• Example- amia(bowfin)
  23. 23. Order-semionotiformes• Snout and body elongated• Ganoid scale• Example- lepidosteus(gar pike)
  24. 24. Superorder-Teleostei• Mnemonics- SSSSCCBOMPPATEL• 1 scopeliformes• 2 syngnathiformes• 3 Symbranchiformes• 4 scorpaeniformes• 5 clupeiformes• 6 cypriniformes• 7 beloniformes• 8 ophiocephaliformes• 9 mastacembeliformes• 10 pleuronectiformes• 11 perciformes• 12 anguilliformes• 13 tetraodontiformes• 14 echeneiformes• 15 lophiformes
  25. 25. Order-Scopeliformes• Habitat- deep sea• Phosphorescent organ• Dorsal and anal fin without spines• Example- harpodon(bombay duck)
  26. 26. Order-Syngnathiformes• Male have brood pouch for development of young• Example- hippocampus(sea horse)
  27. 27. Order-Symbranchiformes• Body snake like• Pectoral and pelvic fins are absent• Gill-slits join to form a ventral slit• Example- symbranchus
  28. 28. Order-Scorpaeniformes• Projecting spines from gill cover• Examples- pterois(scorpion fish)
  29. 29. Order-Clupeiformes• Pelvic fins abdominal• Weberian ossicles absent• Example- salmo(atlantic salmon)
  30. 30. Order-Cypriniformes• Carps and catfishes• Barbels in cat fishes• Air bladder well developed• Air bladder with duct to pharynx• Example- labeo
  31. 31. Order-Beloniformes• Pectoral fins are large and high on body• Example- exocoetus(flying fish)
  32. 32. Order-Ophiocephaliformes• Long dorsal and ventral fin• Accessory respiratory organ (air sac) present• Example- ophiocephalus(snake head)
  33. 33. Order-Mastacembeliformes• Body eel like• Continuos dorsal caudal and anal fins• Example- mastacembelus
  34. 34. Order-Pleuronectiformes• Flat fishes• Bottom dwellers• Both eyes present on one side• Example- pleuronectes
  35. 35. Order-Perciformes• two dorsal fin• Fin spines present• Accessory respiratory organ(labyrinthine organ) present• Example- anabas(climbing perch)
  36. 36. Order-Anguiliiformes• Body snake like• Pelvic fins absent• Continuos dorsal caudal and anal fin• Example- anguilla(eel)
  37. 37. Order-Tetraodontiformes• Inflate with swallowing water• Neurotoxin tetrodotoxin in internal body parts and skin• Example- tetraodon(globe fish/puffer fish)
  38. 38. Order-Echeneiformes• First dorsal fin form sucker on head• Show commensalism with host• Example- Echeneis/remora(suc ker fish)
  39. 39. Order-Lophiiformes• First of few dorsal spines with bulb like tip to lure prey• Example- lophius(angler fish/devil fish)