#ichtyology

[herpsandbirds]

Pacific Lamprey (Entosphenus tridentatus), migrating upriver, family Petromyzontidae, order Petromyzontiformes, Willamette Falls, OR, USA

photograph by David Herasimtschuk

[boobookittenartblog]

Illustration by Brian Choo

[savanisoptera]

Sauger iconografish

[ornithologyorthodoxy]

3/10/23

[hobby-zoologist]

New Rainbow-Colored, Deep-Sea Fish Officially Described by Scientists in the Maldives | Smart News| Smithsonian Magazine

New Rainbow-Colored, Deep-Sea Fish Officially Described by Scientists in the Maldives

The new-to-science species was named after roses, the Maldivian national flower

[cuicuit]

A scale from the Linea Lateralis (lateral line organ)

Some fishes have a row of tiny scales on each side of their body, which works as a sensory organ, detecting vibrations in water. The little hole in the middle of the scale let the water penetrate under the scale, into a tiny canal which conducts the liquid in contact with the external structure of a sensory cells' group, connected to a nerve. The impulse that the nerve record depends on the pressure of the fluid : it can detect very low pressure variations, which allow the fish to perceive movements of other fishes around or to regulate its own swimming speed.

[crazycephalopoda]

Why do I have so many variations of the same meme

[typhlonectes]

Pallid Sturgeon yearlings at Garrison Dam National Fish Hatchery in North Dakota, USA

Pallid sturgeon can grow to more than 6 feet long and weigh over 80 pounds. Several of them have been aged at over 60 years old. They haven’t changed much in 70 million years, and their ancestors go back more than 200 million years...

Read more: https://www.fws.gov/fisheries/fishmigration/pallid_sturgeon.html

photo by U.S. Fish and Wildlife Service