#fish anatomy

[pulsethebabyoctopus]

Found this guy among my old notes and stuff

I still love him

[fish-i-imagined]

Diaphonized fish !

Via Pinterest

[protectoursharks]

There are three morphologies of dorsal fins: nearly divided, continuous, and clearly divided.

Ichthyology Notes 1/?

[fishyfishyfishtimes]

Daily fish fact #386

Fish anatomy!

Fish have different types of scales that are as varied as fish themselves! The most common type of scale is called a leptoid scale, which has small bony ridges on the outer part and connective tissue on the inner part. They're thin, translucent and not as strong as many other fish scales, but they allow for more flexibility and less drag!

[feels-of-an-asexual-anemone]

Hey all, it's Mermay again and I've realized that most people don't know much about real fish anatomy! So I hope you don't mind me sharing a few things that will hopefully be helpful in your creative processes!

1) Most fish (except sharks) have a bony plate covering their gills. This plate is called the operculum and can have spikes! The actual gills are internal and very fragile

2) The bones in the tail (caudal fin) are fan shaped, not pointed like a human tailbone or a dolphin fluke! Soft cartilage rays extend out from these bones, forming the swishy part of the tail

3) Fish scales have cool textures! The most common are tree ring type designs (cycloid) and tree rings with crimped edges (ctenoid) but there are also cool interlocking diamond patterns (ganoid) and the teeth-like shark scales(placoid)!

4) Most fish have something called a lateral line that serves as a sensory organ! It looks like a slightly darker line of scales running along the side of the body and has specialized cells that detect things like motion, vibration, and pressure. This is pretty important in the ocean. If your mermaid is fish based, it would probably have a lateral line

6) The basic fish body plan is 1-2 dorsal fins, 2 pectoral fins (one one each side of the body), 2 pelvic fins (one on both sides), one anal fin, and the caudal (tail) fin. There are variations! But this is the basic template

6) Fish scales are covered in a thin layer of skin. If a fish has bioluminescent cells (photophores) those cells are in the thin outermost layer of skin. This means photophores are quick to rub off and have to be grown back again!

That's all for now! Happy May!

(Bonus fact that I think is fun: the actual name for the muscular part of the tail is the caudal peduncle, which I think is a great word)

[groundpearsgarden]

Fish useful ref :)

🎏 Yaaaaaay! Thank you for sharing, I'm working in two commissions right now, and I hope that come even more! Useful references that I'm using for one of them:

https://johnmuirlaws.com/fish-anatomy-artists/

[c-c-moon]

May 

Biological Illustration Final Creative Project︱Blue Chromis Fish Anatomy Puzzle︱May 2018

[12stupid34dumb]