Fish
Achondrostoma (Achondrostoma Arcasii)- A freshwater fish of Portugal and Spain, Achondrostoma Arcasii is a little known species threatened by the loss of its habitat. It has a rounded snout and scales on its pelvic fins. This is a little studied species and it is thought to be a short-lived species with a fairly opportunistic diet, eating a variety of aquatic invertebrates.
Anglerfish (Lophius Piscatorius)- At first glance, it appears to be all head, and a head almost as wide as the whole fish is long. It has a short flattened body tapering sharply towards the tail. The skin is dark, rough and knobbly and has no scales. Despite its unappetising look, Anglerfish are a commercial species, and considered good eating.
Angular Rough Shark (Oxynotus Centrina)- this species is suitably named for its pointed head and fins, and the rough teeth-like scales, known as ‘denticles’, which cover its body. The angular rough shark has a broad, flattened head, a short, blunt nose and two tall, sail-like dorsal fins. This shark feeds mostly on mollusks and worms using a suction mechanism.
Arctic Charr (Salvelinus Alpinus)- The Arctic Charr is a large, cold-water fish whose physical appearance is highly variable between and within populations. Its body colour is largely dependent on the location, season and sexual maturity of the individual, but is generally silver-white, sometimes becoming bright orange on the underside and fins. These are a very good eating fish.
Arno Goby (Padogobius Nigricans)- The Arno Goby is a freshwater fish which is endemic to a small number of rivers and lakes in Central Italy. A relatively small species, the Arno goby has a large head and an elongated body which flattens towards the back. The mouth appears almost disproportionately large in comparison with the rest of the body and is equipped with numerous small teeth.
Atlantic Halibut (Hippoglossus Hippoglossus)- A highly sought after food fish, the Atlantic halibut is the largest flatfish in the world (2) (3). Flatfish exhibit a unique and distinctive anatomy that is adapted to their life on the sea bed; namely, they are flattened sideways and habitually lie on one side of their body, instead of being flattened from top to bottom like many others of the sea bed. As a result, both eyes tend to migrate to one side of the head during development. The Atlantic halibut lies on its left side and has both eyes positioned on its right, facing upwards very similar to flounder.
Atlantic Salmon (Salmo Salar)- These fish have been called the king of fish, due primarily to its spectacular ability to clear seemingly insurmountable obstacles. Adult Atlantic salmon are usually silvery-grey with some black spotting, but become reddish with purple spots in the breeding season, when males also develop a hooked lower jaw for fighting. Adult Atlantic salmon spend most of their lives at sea where they roam vast distances in small groups in search of food. At sea their diet consists of squid, shrimp and small fish such as herring or cod.