Unknown Strain

An unknown-strain catla is a Catla catla whose hatchery line, wild source, or selective-breeding history has not been identified. Catla, also called bhakur or major carp, is a fast-growing South Asian river carp with a deep body, large upturned mouth, broad head, silvery sides, and a darker back. The species is widely farmed in India, Bangladesh, Nepal, Pakistan, and other warm regions, usually as a surface-feeding carp in polyculture with rohu and mrigal. Unassigned fish may include ordinary farm stock, mixed hatchery seed, or occasional color variants, but the label does not define a stable strain.

For growers and researchers, strain history matters because growth rate, age at maturity, survival, and disease performance can vary between broodstocks. Unknown-strain catla can still be useful for pond production, stocking trials, or local food fish culture, but breeding plans should avoid assuming genetic purity. Good handling centers on warm, well-oxygenated ponds, plankton-based feeding supplemented as needed, careful transport of fingerlings, and quarantine before mixing sources. Records of supplier, spawn batch, and harvest performance are worth keeping even when the formal strain is unknown.

Colors: Albino, Black, Blue, Brown, Gold, Gray, Green, Leucistic, Melanistic, Mottled, Orange, Piebald, Red, Silver, Spotted, Striped, White, Wild Type, Yellow