Hatching catfish
(commonly channel catfish or African catfish) involves several key steps,
usually done in a controlled hatchery setting. Here’s a general overview:
1. Breeding Preparation
· Select healthy broodstock (mature male and female catfish).
· Ensure males and females are sexually mature (usually 1–2
years old).
· Feed them a high-protein diet before breeding to condition
them.
2. Spawning
There are two main
methods: natural and induced (artificial) spawning.
Natural Spawning:
· Place males and females in a pond or tank with nesting
areas (like cans, boxes, or pipes).
· Males prepare nests; females lay eggs; males fertilize
them.
· After 5–10 days, eggs hatch.
Induced Spawning (more common for African catfish):
· Inject females with hormones (like Ovaprim or pituitary
extract) to induce ovulation.
· Strip eggs from the female by hand after 10–12 hours.
· Collect milt from the male (sacrificed or stripped).
· Mix eggs and milt for fertilization.
3. Incubation
· Spread fertilized eggs in hatching trays or incubators
with flowing clean water.
· Maintain water temperature between 26–30°C (79–86°F).
· Eggs hatch in 24–72 hours depending on species and
temperature.
4. Larvae Care
· After hatching, the fry (baby fish) absorb their yolk sac
for 2–5 days.
· Once the yolk is absorbed, start feeding them with live
feed (like artemia or infusoria) or formulated starter feeds.
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