Herculis crossword 23 May

[kenbraham]

Am stuck with 4 down "classification bony fish having rayed fins and swim bladder"

Any help welcome.

-E-E-S-

[Toxic Guts]

Teleosts comprise approximately 23,000 of the 24,000 species within the actinopterygians, and 96 percent of all living fish species.

I thank you!