Channel Catfish Care Guide
Ictalurus punctatus is a large North American freshwater catfish reaching over a metre; it is a pond and aquaculture species, not a true aquarium fish.
Compiled by Aquairi from published sources · Published · Updated
Overview
The channel catfish (Ictalurus punctatus) is a large freshwater catfish native to North America. According to FishBase it can reach a total length of 132 cm and a weight of more than 26 kg, with a reported maximum age of 24 years. It is widely farmed and stocked in ponds and reservoirs, which makes it unsuitable for typical home aquaria.
Taxonomy
- Family: Ictaluridae
- Genus: Ictalurus
- Scientific name: Ictalurus punctatus
Habitat
Wikipedia and FishBase describe a native range across the St. Lawrence-Great Lakes, Hudson Bay and Missouri-Mississippi river systems of southern Canada, the United States and northern Mexico, with introductions throughout the United States. The species occupies rivers, reservoirs, lakes and ponds, often in turbid water, and is a cavity nester that deposits eggs in crevices and hollows.
Tank requirements
- Minimum volume: 1500 L (pond-scale; not an aquarium fish)
- Temperature: 4-25 °C (39-77 °F)
- pH: 6.5-8.0
- GH: 8-20 °dGH
- Lifespan: 8-15 years in captivity (up to 24 years reported in the wild, FishBase)
Diet
An omnivore that shifts toward predation with age. FishBase and Wikipedia record a diet of small fish, crayfish and other crustaceans, molluscs such as snails and clams, aquatic insects, frogs, and plant material including algae, seeds and grains; juveniles feed more consistently as omnivores.
Compatibility
A peaceful but very large, nocturnal, bottom-dwelling species. Its eventual size and predatory adult diet mean it will consume small tankmates, so it is kept in ponds rather than community aquaria.
Breeding
FishBase reports spawning from April to July at 27-28 °C, with egg masses of up to 20,000 eggs and incubation of 3-8 days depending on temperature. The species is a cavity nester whose eggs are guarded in sheltered hollows.
Conservation status
IUCN Red List: Least Concern (assessed 2012).
Ictalurus punctatus (Channel Catfish) Breeding Guide
Overview
Ictalurus punctatus, the channel catfish, is a North American catfish of the family Ictaluridae, distributed roughly across the Mississippi River basin and into southern Canada and peninsular Florida. It is one of the most important aquaculture species in the United States and reaches large size, so it is suited to ponds rather than home aquaria. According to Wikipedia, channel catfish are cavity nesters that lay their eggs in crevices, hollows or debris to protect them from currents.
Conditioning
According to University of Florida IFAS extension material, channel catfish normally breed for the first time in their second or third year of life, and improved spawning success, with more and larger eggs of higher fertility, is seen in fish three to five years old. Suitable broodstock are therefore mature, well-grown adults rather than young fish.
Spawning Behaviour & Trigger
The spawning season runs from about April through June. Females begin laying eggs at water temperatures above 21°C (70°F), with optimum spawning at 25 to 27°C. Spawning takes place in an enclosed cavity, and the male takes charge of the nest. Females have wide variation in egg number, laying between 3,000 and 50,000 eggs depending on age and size, roughly 6,000 to 8,000 eggs per kilogram of body weight. The adhesive eggs are large, about 2.4 to 3.0 mm in diameter, and laid as a single mass.
Egg & Fry Care
The male usually incubates and guards the egg mass. Eggs hatch in four to ten days at 21 to 27°C; at the optimum range of 25 to 27°C, embryos hatch in four to six days. In aquaculture the egg masses are often moved to hatchery troughs, but in ponds the guarding male tends the eggs in the nest cavity until they hatch.
Common Challenges
Reliable spawning needs warm water above 21°C, a secure enclosed cavity and mature broodstock, plus enough space for large fish to pair without injury. These requirements, together with the adult size, mean channel catfish reproduce in ponds and farms rather than home tanks; hobbyist breeding is impractical.