Tuna, a deep-sea fish with exceptionally clean flesh, is the only exception to the rule.
Other animals including squid and some deep-sea fish can produce light, sometimes of different colours.
The light on the top of her helmet makes her look like a deep-sea fish.
Several species of deep-sea fish have luminous organs used to attract prey.
The lanternfish is, by far, the most common deep-sea fish.
Many deep-sea fish are bioluminescent, with extremely large eyes adapted to the dark.
There might be all sorts of ravenous deep-sea fish left in here.
Q. The particular type of marine animals you seek to protect at this moment are deep-sea fish.
Last month, it became public knowledge that a number of deep-sea fish are threatened with exhaustion and even extinction.
First of all, it is extremely difficult to make and provide a definition of deep-sea fish.