If you have trimethylaminuria, any children you have will be carriers of the faulty gene so are unlikely to have problems. There's only a risk they could be born with the condition if your partner is a carrier. The species is a member of the family Lampridae, which also includes the Oarfish and the Ribbonfish. It has a distinctive circular body shape and is one of the very few “warm-blooded” fish that are capable of maintaining a body temperature higher than the surrounding water.

Sometimes it's caused by faulty genes that a person inherits from their parents, but this isn't always the case. The giant tube worm has a bright red plume, rich in hemoglobin, which it extends from its protective chitinous tube to absorb oxygen and chemicals from the surrounding water. Discover More with Active Wild The Blue Parrotfish is a brightly-colored fish that inhabits the coral reefs of the Western Atlantic Ocean, ranging from Florida to Brazil. It is named for its parrot-like beak, which it uses to scrape algae from coral reefs. The humphead wrasse is a striking-looking animal, but that’s not why it’s been included in this list of weird fish. The real reason is that it – and many other wrasse (including the equally strange-looking Asian sheepshead wrasse, Semicossyphus reticulatus) – change sex from female to male as they get older. This only occurs in the largest individuals. Discover More With Active Wild You’ve probably never laid eyes on a wels catfish before, let alone caught one. Well… German angler Martin Glatz landed this stunner while fishing at a lake in the Netherlands with his twin brother. He calls his catch a “mandarin catfish,” which is how some European anglers refer to leucitic wels catfish. It’s as yellow as a school bus. 8) A Lancetfish from “The Twilight Zone”

In its native habitat, the blobfish looks almost normal; only when brought to the surface – where there is substantially less pressure – does the fish begin to look “blobby”. Discover More With Active Wild The hairy frogfish, also known as the striated frogfish, is a species of anglerfish found in shallow waters of the Indo-Pacific region. It is named for its unique appearance, with numerous hair-like skin filaments covering its body, which provide excellent camouflage among algae and coral. Named after their resemblance to quills, sea pens are a truly unusual example of what can be found on the ocean floor. Actually a colony of animals that can withdraw into the ground, these schools are made up of tiny, tentacled polyps rooted into the seafloor. The whale shark is not only the largest shark species, its also the largest living fish, reaching lengths of up to 40 feet and weighing as much as 20 tons. Unfortunately, as of March 2020, it’s been declared extinct, despite at one time being one of the first fish described by European explorers of Australia a long time ago. 3. Pink See-Through Fantasia

The species can grow up to 50 cm in length and is typically found in shallow coral reefs and seagrass beds. The species is a solitary and slow-growing fish, and can live for up to 30 years in the wild. The Humphead Wrasse is easily recognizable by its hump on the forehead, which gives it its name, and by its large size; the species can grow up to 6 feet in length and weigh over 400 pounds.Trimethylaminuria symptoms can be present from birth, but they may not start until later in life, often around puberty. The Psychedelic Frogfish is named for its strikingly bright and vibrant coloration, which includes bold patterns of red, yellow, and white. It has a flattened body, a large mouth, and a lure on its head with which it attracts prey. Part of the same family that the seahorse belongs to, the leafy sea dragon’s plant-y appearance lets it sneak up on unsuspecting prey and hide away from any predators looking to turn it into a meal. It’s also on record as David Attenborough’s favourite animal, and he’s seen plenty of those in his time! 2. Handfish The Alligator Gar is a top predator in its ecosystem and is known to eat fish, turtles, and even small mammals. Despite its fearsome reputation, it is not a threat to humans, and is actually a popular game fish for recreational fishing. The Alligator Gar has a long lifespan, and may live for several decades in the wild. Discover More With Active Wild

Pilot fish are not completely unheard of around the British Isles. There are unconfirmed reports that these fish have occasionally washed up dead on beaches in England, Wales and the Republic of Ireland. However, they are very much seen as a vagrant species which, for unknown reasons, have travelled from their warm water habitat and ended up disorientated on lost around the coast of Britain. It is also possible that pilot fish can survive around the UK when the sea temperature is high but will die when the temperature drops. The UK shore caught record for this species was set in 1997 at the Towy Estuary, Carmarthenshire, Wales when Mr J. Richards caught a pilot fish of just over 10oz. Pufferfish Like all piranhas, the red-bellied piranha is a squat, powerful fish, armed with a mouthful of sharp teeth. The species is an omnivore, eating plants as well as a variety of small to medium-sized animals, including fish, worms, and even mammals and birds. The West Indian Coelacanth is one of two living species of Coelacanth, the other being the Indonesian coelacanth ( Latimeria menadoensis). Mekong Giant Catfish Mekong giant catfish. KKPCW, CC BY-SA 4.0, via Wikimedia Commons (cropped / resized by ActiveWild.com)Found in the western Pacific Ocean and Indian Ocean, the Wobbegong is a species of the “carpet shark” family, and it’s easy to see why. Resembling a large rug compared to the sharks we often think of, the wobbegong spreads itself out on the ocean floor, camouflaged by its flat, tasselled body.