See:

Hinshaw, Jeffrey M. "Effects of illumination and prey contrast on survival and growth of larval yellow perch Perca flavescens." Transactions of the American Fisheries Society 114.4 (1985): 540-545.

Thankyou Jeff

it is now known that tank colour affects fish larvae survival. For European seabass and sea bream, the most efficient colour for improving larval survival and growth is dark grey, as well when they are fed on live prey or compound diet. It's related to eating behavior but also the color may decrease agressive and cannibal behavior.

all the best

Chantal

Thank you so much

Yes.larva dapat menangkap lebih banyak pakan alami

Becau larvae can take more natural food

A tank color is one of the physical parameters that affect at fish larvae in detecting and catching their prey, it is therefore important to optimize their rearing conditions.

Tank color can cause stress in species such as common carp and tilapia with negative impacts like behavioral alterations, modifications to normal feeding and changes in swimming activity. Walling behavior (crowding against and swimming into tank walls) has been observed in Atlantic cod larvae when they were reared in tanks with white walls. several of fish larvae species reared in black tanks such as grouper have shown enhanced larval growth and survival. The positive effects of using black tanks are probably related to the increased contrast between live prey and the tank’s background color.

Contrarily, in haddock larval, survival was better in larvae reared in white tanks compared to those reared in black tanks.

what about feed colour???

Dear Dr.Nawras A. Al-Faiz & Dr.Chantal Cahu,

                       Thank you for sharing the more valuable information on fish larval rearing. Apart from tank colour, whether colour of the prey and water media particularly in mudcrab larval rearing. stage(s) and during metamorphosis would improve the survival and feed consumption.

Regards,

Pandiarajan

MPEDA

Min. of Commerce & Industry, Govt. of India