#ray-finned fishes

[lil-tachyon]

Ray-Finned Fishes

[rattyexplores]

Flatfish found at low tide. Very well hidden, I only found it after I had accidentally stepped on the poor thing.

13/08/23 - Pleuronectoidei sp.

QLD:WET - Flying Fish Point, low tide sandy bay

[relatablemarine]

Here's one for those interested in the alternative style, the stoplight loosejaw or rat-trap fish (Malacosteus niger). This species sports the classic black colour scheme of the twilight zone and boasts one of the largest gapes of all fish. What makes this fish special is the pops of colour they incorporate in their wardrobe, including red bioluminescence. As many species in the twilight zone are unable to perceive red light this adaptation allows the fish to illuminate their surroundings without alerting their prey. The stoplight loosejaw is also one of the few animals to make use of chlorophyll, a green pigment commonly used by plants to absorb light energy. This rebellious fish deviates from the from other chlorophyll users however, concentrating a divertive of the chemical around the eyes in order to maximize their red colour vision.

[things-ya-should-know]

Lobe finned versus ray finned fish

Short answer: ray finned fish evolved from from lobe finned fish

Long answer: Lobe finned fish were dominant for a long time in the waters before they climbed up onto land and evolved into you, dear reader. This occurred around 400 MYA (million years ago). Sometime before that, about 425 MYA, ray finned fishes had evolved, but remained relatively small. This was until the permian mass extinction (290-245 MYA), when many lobe finned fish died out, and ray finned fishes (teleosts) were left to flourish and evolve to fill the empty evolutionary niches. The only lobe finned fish left behind today are the elusive coelacanths and lungfish. ***AND*** as the awesome people in the notes would like me to add, all tetrapods (tetra meaning four, pod meaning foot) are phylogenetically lobe finned fishes as well. this means amphibians, reptiles, and mammals.

@marinebiologyshitposts @fuckyeahcoelacanths

[heartnosekid]

salmon for anon!

🐟-🌊-🐟 / 🌊-🐟-🌊 / 🐟-🌊-🐟

[uncharismatic-fauna]

Uncharismatic Fact of the Day

Often hailed as beautiful and powerful, lumpsucker fish have many talents; one important skill they lack, though, is swimming. Lumpsucker bodies are almost perfectly round, which isn't very hydrodynamic. On top of that, they lack a swim bladder-- an organ that other fish use to control their bouyancy. As a result, lumpsuckers spend most of their lives suctioned onto rocks or coral.

(Image: A pair of Pacific spiny lumpsickers (Eumicrotremus orbis) by the Shedd Aquarium)

If you like what I do, consider leaving a tip or buying me a ko-fi!

[fuckyeahcoelacanths]

coelacanth, what are your thoughts on Actinopterygii?

[fishyfishyfishtimes]

Daily fish fact #636

Ray-finned fish!

Ray-finned fishes (class Actinopterygii), also known as actinopterygians, are the most abundant group or vertebrates, as various estimates say the class is comprised of 25 000 - 32 000 species! Most are traditionally characterised by their fanlike fins, which are made of skin stretched out over bone spines. The biggest group inside of the ray-finned fishes are the teleosts, which make up about 99% of all ray-finned fish.

[fishsfailureson]

Had the sudden urge to do a quick digital colouring of this

[junesejar]

Esra\ Pancake!! expert gremlin gamer

She rents room from banan eel guy her money comes from grinding skins for other ppl in mmo. When it isn't grinding \still grinds on the phone\ she goes out to eat AND EAT A LOT OH BOY. Nearest non lactose caffe owners scared shitlles of friday evening cuz she eats thru entirety of they stock \sometimes tags trench along thats @milkaide fish dude\

[sabrinazoarium]

first fish of the new year :)

[rattyexplores]

Banded Toadfish spotted in a tidepool.

16/05/23 - Marilyna pleurosticta

QLD:CQC - Emu Park, rocky shoreline

[relatablemarine]

This charming little fellow is the red handfish (Thymichthys politus). These fish spend their days wandering around the seabed looking for crustaceans and worms to eat, all while looking like the traded their last braincells for a bag of chips.

Unfortunately there are currently less than 100 individuals in the wild and their natural range of coastal Tasmania, Australia has shrunk to only a few small reefs in Frederick Henry Bay.

[punk-rocking-rose]

cant upset conservatives with a transition timeline as i've yet to transition but i've got the next best thing: evolutionary timeline

[uncharismatic-fauna]

Uncharismatic Fact of the Day

Though they may look unassuming, brown trout are actually one of the most diverse vertebrates in the world! Populations and individuals can look wildly different from each other, to the point where many groups were often mislabeled as entirely separate species, and they have a remarkable ability to adapt to any environment. In fact, there is more genetic diversity between populations of British brown trout than there is between any population of the human race.

(Images: Three morphs of brown trout (Salmo trutta) by Eric Engbretson, David Miller and Jon Beer)