These fish, particularly the Bear Lake strain, often lack the bright crimson jaw slash that, at times, may be yellow.

Mesopelagic fish usually lack defensive spines, and use colour to camouflage them from other fish.

Tropical fish lack those easy markers, whose use figures prominently in standard methods of taking census counts and monitoring fish populations.

One critique dismissed the findings, arguing that fish lack the brain complexity to feel pain.

A moment later the fishes lacked depth to swim any further, and following the Green Lady's example.

This fish lacks dorsal spines, but it has 26-29 dorsal soft rays.

Since bony fish lack the ampullary organ, the repellent is selective to sharks and rays.

However, fish and amphibians lack this mechanism, as they can usually eliminate ammonia from their bodies by direct excretion.

Many pelagic fish with higher fat contents lack the needed type of heat-curing myosin and are not used for surimi.

Cartilaginous fish, such as sharks also lack a true maxilla.