Presentation is loading. Please wait.

Presentation is loading. Please wait.

MARINE ORNAMENTAL FISHES

Similar presentations


Presentation on theme: "MARINE ORNAMENTAL FISHES"— Presentation transcript:

1 MARINE ORNAMENTAL FISHES
Dr.B.AHILAN, Ph.D Associate Professor Dept. of Aquaculture Fisheries College and Research Institute Thoothukudi

2 Ornamental sponges Clathria Bowl sponge neptune's cup sponge
Red sponge, Amphimedeon

3 IMPORTANT FAMILIES Acanthuridae :12 species Balistidae : 8
Scaridae : 9 Labridae : 6 Syngnathidae : 6 Chaetodontidae : 15 Haemulidae : 3 Pomacanthidae : 3

4 IMPORTANT FAMILIES contd..
Triacanthidae : 3 species Monacanthidae : 2 Scorpaenidae : 2 Theraponidae : 2 Diodontidae : 1 Caesionidae : 1 Dasyatidae : 1 Grammastidae : 1 (Pogonoperca punctata) Malacanthidae : 1 Zanculidae : 1

5 Families contd… Ostracidae (Tetrasomus, Lactaria) Tetradontidae
Food fishes / not considered as ornamentals Lutjanidae Serranidae (Epinephelus group) Siganidae Nemipteridae Mullidae

6 Syngnathidae Pipe fishes and seahorses Small in size
Pipe fishes: long and slender with bony exterior Seahorses: Horse like;brood pouch in male Pectoral, anal and caudal fins absent Feed - zooplankton, copepods, isopods and amphipods Seahorse four species(Lipton, 1996) Hippocampus kuda, H. fuscus, H. trimaculatus, (H. histrix), H. spinifera Schedule 1 of Wild Life Protection Act

7 Hippocampus kuda

8 Scorpion fishes Mostly venomous Most popular aquariculture sp
About 30cm Color red, brown or gray Feed - crabs and small fishes Nocturnal Pterois volitans

9 Pterois volitans-red lion fish

10 Pseudochromidae Small Lives under boulders
Pseudochromis and Acanthochromis

11 Chaetodontidae World wide 113 sp
Feed - coral, algae, small benthic invertebrates Monogamy Chaetodon, Heniochus Small buoyant eggs Hatching hrs

12 Chaetodon collare

13 Pomacanthidae Angel fishes
Stout backward projecting spine on the lower edge of operculum Centropage- small in size - <8cm- Feed algae Form harems of single dominant male and several females Pomacanthus relatively larger cm Feed-sponge supplemented with algae, tunicates Monogamous P. annularis, P. imperator

14 Pomacanthus annularis

15 Pomacanthus semicirculatus

16 Pomacanthus

17 Pomacentridae Damsel fishes- anemone fishes
The tentacles touch, poison, and kill fish except for the clown fish. Protects the clown fish from predators. Chromis - Guards a small plot of turf for feeding Abudefduf Amphiprion: eggs deposited on firm substrate Parental care-guards the egg Egg predation-wrasses and butterfly fishes

18 Amphiprion clarkii

19 Amphiprion sebae

20 Chromis sp

21 Abudefduf sexfasciatus

22 Clown fish in anemones

23 Labridae Wrasses Iniistius [Xyrichthys], Thalassoma , Coris
Eats eggs of damsel fish Omnivorous Feed-crabs, shrimps, Polychaetes, Zooplankton Harem found in Labroides - single dominant male followed by several females

24 Iniistius pavo

25 Coris formosa

26 Scaridae Parrot fishes Fussed jaw teeth Feed - coral polyps
Scarus gibbus

27 Chlorurus gibbus (Scarus gibbus)

28 Gobiidae World species exceed 1600
Wide distribution- fw, estuarine, coral reefs Cryptocentrus obliquus-pink spot shrimp goby Omnivorous Easy to maintain Makes protective burrows Lays eggs in clusters-guard by parents Successfully bred

29 Cryptocentrus leptocephalus (C.obliquus)

30 Acanthuridae Surgeon fish Acanthurus, Naso, Zebrasoma
Bony, knife like structure in the middle of the tail. Naso- two spines

31 Acanthurus leucosternon

32 Naso brevirostris

33 Zebrasoma veliferum

34 Balistidae Triggerfish Odonus niger - highly abundant
Feeds- sea urchin, starfish,crabs and shrimps Size>30cm

35 Odonus niger

36 Balistoides viridescens

37 Zanculus cornutus Rare Species Bolbometopon muricatum
Pogonoperca punctata Low population,- Low fecundity Coral destruction High natural mortality Predation

38 Zanculus cornutus

39 Porcuppine fish

40 Box fishes Ostracion

41 BREEDING METHODS Egg depositors : Clown fishes
Mouth Brooder : Apogonids Pouch breeders : Sea horses Egg scatterers Problem in Breeding Breeding Successful - Sea horses, Anemone fishes, Chaetodon, Pseudochromis, Gobiosoma sp

42 BREEDING contd Technology not reliable or inefficient to sustain as an industry Srilanka- Natural collection and marketing for 50 sp India - Damselfish, Amphiprion sebae, A. chrysogaster, Hippocampus kuda Egg scatters are difficult to breed Butterfly fish, Angel fish, Wrasses -more difficult to raise Low fecundity Non availability of quality live feed Thermoregulation for breeding Daily checking of pairing

43 FISHERY Least exploited Gears Lift net Seine net Scoop net Traps
Hand picking – skin divers Stupefying methods / icthyocides - cyanide, clove oil Crevice dwellers and Caverns- no specific fishing method

44 CHOOSING A RIGHT FISH FOR AQUARIUM
Avoidance of sensitive sp Stocking compatible sp Less fish stock-easily feeding – Anemone fishes, Gobids Communal living (different type feeders) Stocking cheap varieties Segregating big predators (Grouper)

45 THANK YOU


Download ppt "MARINE ORNAMENTAL FISHES"

Similar presentations


Ads by Google