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#icthyology
the-briny-bulletin · 7 months
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drafthearse · 3 months
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Full body view of a geometric moray (Gymnothorax griseus) shot during a night dive in Ras Muhammad National Park, Red Sea, Egypt.
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s-ublimedyke · 5 months
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pyjama shark?? is he going to bed??????
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sabrinazoarium · 1 year
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in honor of gar week! did you know gars are prehistoric?? i wish i was prehistoric...
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rebeccathenaturalist · 2 months
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This is from last summer (I found it while trying to clean up browser tabs--oops.) Anyway, it's one of many examples of critically endangered species showing an upturn in population with support. The Devils Hole pupfish is particularly imperiled because it is only found in one flooded cavern in Nevada's Amargosa Desert; the species is likely descended from fish that were washed in there by flooding thousands of years ago, and have managed to eke out a living in the hot, oxygen-deficient water ever since.
This is one of the first species ever listed under the U.S. Endangered Species Act. Devils Hole is threatened by groundwater depletion from well drilling, and after the pupfish's ESA listing there were numerous legal battles between conservationists and farmers over water usage. Water levels reached their lowest point in the early 1970s, but have been slowly rising since then.
Scientists are excited because the current wild population (at least as of last fall) is at 263 fish. That's up from just 35 in 2013, the lowest recorded population ever. There are a few hundred more in captivity, being used to breed more young for reintroduction. The hope is that this fall's wild count will break 300, a good sign for the world's most endangered fish.
By the way, THIS is the entirety of the Devils hole pupfish's habitat, the only place in the world where they are found:
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herpsandbirds · 2 months
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Alligator Gar (Atractosteus spatula), family Lepisosteidae, order Lepisosteiformes, found in fresh and brackish water in or near the Mississippi River, and along the Gulf Coast of the U.S.
This large predatory fish can grow up to 8.5 ft. long.
photograph by Solomon David
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amnhnyc · 5 months
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Still feeling stuffed from your Thanksgiving feast? Meet the Guineafowl puffer (Arothron meleagris)! Instead of chowing down on turkey, this fish feeds mainly on the tips of branching corals. It gets round not by eating but to avoid being eaten, swallowing water to dissuade predators from attempting such a big bite. If it’s late to inflate, this fish also has bacteria in its body that can be toxic.
Photo: merav, CC BY-NC 4.0, iNaturalist
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feather-bone · 7 months
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This is the devil’s hole pupfish! A tiny species that lives only in One water-filled limestone cavern in Nevada. It was one of the first animals on the endangered species list. At the last count in 2022 there were 263 pupfish observed - the most in 19 years! They’re tracked pretty carefully, as their 215 square foot habitat (the smallest of any know vertebrate) is fragile and has been disturbed in the past by groundwater extraction and other human interference.
[ID: an illustration of a shiny metallic blue fish, the male devil’s hole pupfish, facing to the right. It is on a lighter blue background with a ripple pattern. End.] l
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thatsbelievable · 6 months
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randybutternubber · 7 months
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Made a friend out of an eraser
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dougielombax · 11 months
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TERFs can fucking die and go to hell mad about it!
Fuck them!
It’s not their future!
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soybeenss · 8 months
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blud is going for a owim
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drafthearse · 3 months
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young trouts (Salmo trutta)
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zoologica42 · 1 year
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👉👈What if we were whitetip reef sharks, and we slept on the sleepy shark pile together 👉👈
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protectoursharks · 1 year
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Cetomimidae or Flabby Whalefish
When transitioning from their juvenile form to their adult form, male Whalefish lose their mouths, esophagus, and stomachs! Their jaws fuse closed and they rely on the food they ate as juveniles in adulthood. It's believed this evolved due to little food resource in their habitat- the deep sea.
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There's been a recent increase in the removal of old dams and other barriers on salmon streams on the west coast of the U.S. While last year's removal of part a weir from McKay Creek wasn't as dramatic as the removal of dams on the Klamath River, the results of the removal are very promising.
The weir was installed about thirty years ago due to the creek being drained by a nearby reservoir. Unfortunately, its design meant that salmon could no longer go higher up the creek to their historic breeding grounds.
The power of nature's resiliency--if we give it the chance to recover--was evident in the fact that this past February saw the return of the salmon to the creek for the first time in three decades. What's even more exciting is that scientists found not just a few redds (salmon egg nests), but seventy-two of them in a six mile stretch of the creek above the weir! That's incredibly impressive, considering how long salmon were blocked from that area.
Here's to more projects like these giving our salmon a fighting chance for survival in spite of everything we've thrown at them over the years.
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