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Describe depuration process.
starved in clean water, stop feeding, change water
Give TWO (2) sites requirements for mussel.
Open sea, clear water with plankton, moderate water current.
How to differentiate male and female mussel?
Male has creamy-white color gonad tissue. Female has the reddish-apricot color gonad tissue.
Why mussel is ideal for aquaculture?
Disperse spawning, fast growth rate, strong and sturdy nature, lack of predator
How to differentiate male and female?
cheliped color and size, reproductive organ
Give TWO (2) reasons why culture this species?
No larval stage, high market value, tolerate high density, survive well without water (transportation), reach commercial size in 9 months
Give TWO (2) biological features of the fish
triangular tail, big mouth, 2 dorsal fin, torpedo shape, silver body with dark greenish blue black and white belly
Give common and scientific name.
Barramundi/Giant seaperch/Seabass, Lates calcarifer
Does Redclaw crayfish same as Black tiger shrimp? Reason
No. Habitat, appearance
Suggest ONE (1) farming method.
Earthen pond.
Give TWO (2) external morphologies.
Small mouth, mouth positioned slightly below the snout tip, shorter anal fin, notched dorsal fin with a clear separation between spiny and soft ray.
Give the common and scientific name.
Nile tilapia, Oreochromis niloticus
What is the common name?
Green mussel
Name FOUR (4) body part of a finfish.
Dorsal fin, caudal fin, lateral line, anal fin, pectoral fin pelvic fin, operculum,
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