Question

animals & plants
which one of the following is a group of small
fish, believed to make up around 65% of all
deep - sea fish by weight worldwide?
lanternfish
hammerhead sharks
trout
catfish

Explanation:

Lanternfish are small deep - sea fish. They are known to be a significant part of the deep - sea fish population by weight. Hammerhead sharks are not small deep - sea fish in the context of this question. Trout are mainly found in freshwater (not deep - sea). Catfish also have many freshwater species and are not the group described.

Answer:

Lanternfish