What are some six-letter fish?

15 of the 120 fish in Icillion have exactly 6 letters, for example Salmon, Plaice and Marlin.

Which six-letter fish start with B?

B is the most common first letter here, with 3 names, such as Bichir, Blenny and Bowfin.

Nature · lists

These are the six-letter fish in Icillion: 15 names, from “Bichir” to “Zander”.

15 of the 120 fish have exactly 6 letters (13%).
Most start with B (3), M (2) and T (2).
Only names of one word are counted, and only their letters: spaces, hyphens and apostrophes are not.

What are some six-letter fish?: 15 of the 120 fish in Icillion have exactly 6 letters, for example Salmon, Plaice and Marlin.
Which six-letter fish start with B?: B is the most common first letter here, with 3 names, such as Bichir, Blenny and Bowfin.

How deep does your knowledge go?

Seven prompts a day, twenty seconds each. Obvious answers float on the tip of the iceberg; rare ones sink all the way to the trench.