Fish Atlas

Giant Frilled Sea Slug — A dachshund-sized amphibian that resembles a true sea slug. They have long flowing spines that give them their frilled appearance. Giant Frilled Sea Slugs are blind and navigate their environments using powerful olfactory organs in their skin. They are friendly and have the intelligence of a 7 year old human. These creatures make for wonderful pets.
The Crystal Frog — This 30-60cm (1-2ft) amphibian has been all but domesticated by Gyllis for the very thing that earned them their name. The Frog is known for how its skin filters out the salt from the water around them to form a hard crystalline shell around themselves. Eventually, when these shells grow too heavy they shed it, leaving shells of pure salt behind which can be harvested either for the resource itself or the beauty of the crystals it leaves. The frog itself has grown very friendly to their human neighbors and often come up to them if they need help removing their shell or in search of belly rubs. The frogs are also known for how they hatch their young on their backs from eggs that resemble barnacles.
Dragonfish — This 5-10cm (2-4in) fish is a quite friendly fish that lives around the domes. The fish is known to have long, flowing, if spiny, fins in a number of beautiful colors. The females of the species tend to be double the size of their male counterparts, and after mating, the males tend to follow the females around, joining their “hoard”, as scientists have joked.
Graveyard Squid —The Graveyard Squid is 2-3m (7-10ft) in length, and a predator to be wary of. This deceptively named creature is in fact a reptile, not a squid, but has been named “Squid” in honor of the creature's 8 prehensile limbs. These limbs, as well as the creature’s main body are covered in spines that are used in both hunting and defense, though another method the creatures use is their ability to create a thunderous noise by cracking the bones in its limbs together. The Graveyard Squid is also known to strike things with their limbs to test what they are, similar to how a shark might try to take a nibble of something to see what it is. Another feature of the Squid is its transparent head/torso. This allows one to see the Squid’s hard internal shell, and allows the Squid itself to see in a much wider range than it would otherwise be able to.
Reef Turtle — These reptiles vary in size as they don’t truly stop growing till the reef they host on their backs to act as a shell grows too heavy til it slowly kills them if predators don’t get to them first. While they are called “turtles” it is only for their resemblance to the creature’s body plan. As previously stated, Reef turtles aren’t born with shells, but soon after they are born they foster the growth of reefs, barnacles, and even sea urchin-like life on their backs that will eventually grow to form something of a shell over them that acts as protection. As the Reef Turtle grows older and larger, they can sustain whole ecosystems on their backs.
Cacophony Crab — These 30-60cm (1-2ft) creatures resemble crustaceans with their spindly legs and armored body, but the creature's main feature is the stunningly loud noise it makes. The Crab uses this noise both to scare off predators, but also to stun its prey. The noise is much louder than one would expect from a creature, and while the Crab lives in a gorge near Gyllis Dome, the noise is loud enough that citizens often hear it like thunder from inside the dome.
Crusher Shark — These 4-5m(13-17ft) sharks hunt the Cacophony Crab and the Graveyard Squid, among other creatures. Because of this, they have been nicknamed the Sleep Shark. They hunt by vibration, but are otherwise deaf so the loud noises of its prey fail to harm it. Because its prey often has hard shells this shark has teeth to crush its prey as well as to tear it apart. Their new teeth come in from the middle, and as they get blunted they shift to the sides of the shark’s mouth.
Giant Spined Serpent — This 10-14m(32-45ft) filter feeder resembles old tales of sea serpents with the line of spined fins down the creature's back and its serpentine body plan. It has a wide mouth filled with something similar to baleen. While they are rarely spotted at the depths of the Gyllis, their dead bodies are sometimes spotted being feasted upon by numerous scavengers.
Dart Eel — This 1-2m(3-7ft) fish resembles many species of eel, however the creature's cartilaginous skeleton indicates that it is more closely related to the sharks of the planet instead. The creature has a narrow head with a mouth full of sharp teeth capable of dispensing an excessively lethal dose of tetrodotoxin into its victim's body. The body expands vertically as it ages, resembling a dart in adulthood. The tetrodotoxin within the Dart Eel's venom has also been found in both its eggs and its scales, making it a dangerous for most species to prey on.
Soft Plated Eel — This 60-90cm (2-3ft) fish resembles an eel in body shape when it is not defensive, with a second set of jaws to match that description. The have two large eyes wide set on the top of their heads, and long flowing whiskers. When the animal is defensive, it will curl up into a ball, hidding its more vunerable belly. Its plates aren't tough however, the Eel has in fact gone in the opposite direction, as its plates are too soft and malleable to be easily punctured by teeth or spikes. In the wild, the Soft Plated Eel is a scavenger and bottom feeder, but because of their friendly nature, the Eel as been domesticated as a pet. The Eel can survive three days outside of water, having at some point evolved to survive above water before those land masses disappeared, and especially loves to be carried around like a scarf by its owners. The Eel is not known for its intelligence, but there is no doubt that the creatures love the humans they are paired with.