Some different fish:
Golden Rudd (Scardinius erythrophthalmus)
Golden Minnows (Phoxinus phoxinus)-Fast well oxygenated water needed.
Gudgeon (Gobio gobio)
Three-Spined Stickleback (Gasteroseus aculeatus)
Ten-Spined Sitckleback (Pungitius pungitius)
Rosyred Minnow (Pimephales promelas) (Licence)
Rainbow Dace (Cyprinella lutrensis)
Common Minnow (Phoxinus phoxinus)-Fast well oxygenated water needed.
Sunfish (A Lepomis species)
Goldfish (Carassius auratus)
Comets (Carassius auratus)
Wheather Loaches (Misgurnus anguillicaudatus)
Obviously all these fish require certain set-ups, if you like any of them I can give you more info. But if this is your first Coldwater Tank then I would start with the more simple Goldfish/Comets and Wheather Loaches. As I said Perch are PREDATORS, they are no less nice than the Pike they will kill anything that cannot kill them when they are in a tank enviroment, Perches are also illegal to keep and are not sold by any shop.
Golden Rudd (Scardinius erythrophthalmus)
Golden Minnows (Phoxinus phoxinus)-Fast well oxygenated water needed.
Gudgeon (Gobio gobio)
Three-Spined Stickleback (Gasteroseus aculeatus)
Ten-Spined Sitckleback (Pungitius pungitius)
Rosyred Minnow (Pimephales promelas) (Licence)
Rainbow Dace (Cyprinella lutrensis)
Common Minnow (Phoxinus phoxinus)-Fast well oxygenated water needed.
Sunfish (A Lepomis species)
Goldfish (Carassius auratus)
Comets (Carassius auratus)
Wheather Loaches (Misgurnus anguillicaudatus)
Obviously all these fish require certain set-ups, if you like any of them I can give you more info. But if this is your first Coldwater Tank then I would start with the more simple Goldfish/Comets and Wheather Loaches. As I said Perch are PREDATORS, they are no less nice than the Pike they will kill anything that cannot kill them when they are in a tank enviroment, Perches are also illegal to keep and are not sold by any shop.