| Hagfishes | | Lampreys | | Frill sharks and Cow sharks | | Bullhead Sharks | | Carpet Sharks | | Mackerel Sharks | | Ground Sharks | | Dogfish Sharks | | Saw Sharks | | Angel Sharks | | Sawfishes | | Electric rays | | Skates and Guitarfishes | | Stingrays and relatives | | Chimaeras or Ghost Sharks | | Bichirs and Reedfishes | | Sturgeons and Paddlefishes | | Gars | | Bowfins | | Bony-tongued Fishes | | Tarpons and Ladyfishes | | Bonefishes | | Eels and Morays | | Herrings and Anchovies | | Milkfishes | | Carps, Minnows, Loaches and relatives | | Characins | | Catfishes | | Knifefishes | | Pikes and Mudminnows | | Smelts (Osmeriformes) | | Salmons | | Grinners, Lizardfishes and Allies | | Velifers, Tube-eyes and Ribbonfishes | | Bartfishes | | Cods | | Ophidiiform fishes | | Toadfishes | | Anglerfishes | | Clingfishes | | Silversides (Atheriniformes) | | Rivulines, Killifishes and Live bearers | | Needlefishes | | Sawbellies | | Dories | | Stickleback and Seamoth | | Pipefishes and Seahorses | | Spiny eels | | Scorpionfishes and Flatheads | | Perchlikes | | | Snooks | | | Asiatic glassfishes | | | Temperate perches | | | Lates Perches | | | Temperate seabasses | | | Wreckfishes | | | Asian seaperches | | | Grouper | | | Dottybacks (Pseudochromidae) | | | Basslets | | | Splendid perches | | | Jawfishes | | | Roundheads | | | Grunters or Tigerperches | | | Flagtails or Aholeholes | | | Sunfishes | | | Pygmy sunfishes | | | True Perches | | | Bigeyes | | | Cardinalfishes (Apogonidae) | | | Deepwater Tilefishes | | | Smelt-whitings | | | Tilefishes | | | Butterfishes | | | Ara Grouper | | | Bluefishes | | | Cobias | | | Remoras | | | Jacks & Pompanos | | | Dolphinfishes | | | Snappers | | | Rovers | | | Pomfrets | | | Fusiliers | | | Freshwater tripletails | | | Australian salmons | | | Slopefishes | | | Barbeled grunters | | | Tripletails | | | Picarels | | | Mojarras | | | Grunts | | | Porgies | | | Emperor Fishes and Large-Eye Breams | | | Threadfin breams and Whiptail breams | | | Drums or Croakers | | | Threadfins | | | Goatfishes | | | Moonyfishes | | | Sweepers | | | Lanternbellies | | | Gnomefishes | | | Archerfishes | | | Sea Chubs | | | Sicklefishes | | | Armorheads | | | Butterflyfishes | | | Angelfishes | | | Ponyfishes | | | Oldwives | | | Asian leaffishes | | | Chameleonfishes (Badidae) | | | Leaffishes | | | Pristolepidids | | | Hawkfishes | | | Knifejaws | | | Marblefishes (Sea carps) | | | Morwongs | | | Kelpfishes | | | Mullets | | | Cichlids | | | Clownfishes & Surfperches | | | Damselfishes | | | Wrasses | | | Parrotfishes | | | Sandfishes | | | Loach Gobies | | | Eelpouts | | | Pricklebacks | | | Prowfishes | | | Gunnels | | | Wolffishes | | | Antarctic plunderfishes & Barbeled plunderfishes | | | Antarctic dragonfishes | | | Cod icefishes | | | Crocodile icefishes | | | Sand lances | | | Weaverfish | | | Stargazer | | | Sandperches | | | Convict blenny | | | Triplefin blennies | | | Felpfishes, Klipfishes & Scaled blennies | | | Pikeblennies, Tubeblennies and Flagblennies | | | Labrisomids | | | Combtooth blennies | | | Dragonets | | | Freshwater sleepers | | | Sleepers | | | Gobies | | | Wormfishes | | | Spadefishes, Batfishes & Scats | | | Argus fishes (Scatophagidae) | | | Rabbitfishes | | | Moorish idol | | | Surgeonfishes & Unicornfishes | | | Barracudas | | | Mackerels, Tunas & Bonitos | | | Hairtails | | | Moonfish | | | Billfishes | | | Medusafishes | | | Driftfishes | | | Climbing gouramies | | | Gouramies | | | Kissing gourami | | | Snakeheads | | | Boarfishes | | | Bandfishes | | | Snake mackerels | | | Banjofishes | | | Nurseryfishes | | Flatfishes | | Puffers and Filefishes | | Australian lungfishes | | South American and African lungfishes | | Jellynose fishes or Tadpole fishes | | Dragonfishes, Lightfishes, Loosejaws and relatives |
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| American yellow perch NA | | Banded darter EU ,NA | | Blackbanded darter NA | | Common logperch NA | Danube ruffe
(Balon's ruffe) | | Danube streber EU | | European perch EU ,nEU,AS | European zander
(European pike-perch) EU ,nEU,AF | | Fantailed darter NA | | Gilt darter NA | | Greenfin darter NA | | Greenside darter NA | | Johnny darter NA | | Orangethroat darter NA | | Rainbow darter EU ,NA | | Redline darter NA | | Rhone streber nEU,EU | Roanoke darter
(Roanoke logperch) NA | | Ruffe EU ,nEU,NA | | Sauger NA | Schraetzer
(Stripped pope) | | Seagreen darter NA | | Slenderhead darter NA | Tangerine darter
(River slick) NA | | Tessellated darter NA | Volga pikeperch
(Volga Zander) EU | | Walleye nEU,NA | | Zingel EU | |
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Ruffe
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Gymnocephalus cernua
(Syn.: Gymnocephalus cernuus)
(Syn.: Acerina cernua)
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(LINNAEUS, 1758) |
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| | Number of Subspecies: | 00 | | Body length: | 12 - 25 cm | | Weight: | bis 400 g | | IUCN status: | LC (Least Concern)
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