Fin blades
Fin blades | ||||||||||||
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Silverfin leaf ( Monodactylus argenteus ) |
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Systematics | ||||||||||||
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Scientific name | ||||||||||||
Monodactylidae | ||||||||||||
Jordan & Evermann , 1883 |
The fin blades or silver fin blades (Monodactylidae, Syn .: Psettidae) are a family of perch-related fish that live in the coastal tropical Indo-Pacific , on the coast of West Africa and on the coast of Australia in sea and brackish water (rarely in coastal fresh water), mostly in mangroves . The 20 to 25 cm long animals live gregariously in small groups.
features
Their body is high back, almost disc-shaped, in some species (e.g. Monodactylus sebae ) higher than long and clearly flattened on the sides. Fin blades are of a silvery, shiny color, their length is eight to 31 centimeters, depending on the species. Your scales are round or comb scales. The dorsal and anal fins are elongated, their front part is higher. The dorsal fin has five to eight fin spines, the anal fin three. The fins are covered by small scales that fall off easily. The mouth is small, the eyes relatively large, the lateral line organ follows the back line.
species
There are two genera and six types:
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Monodactylus , pelvic fins reducedin adults , ctenoid scales
- Silverfin leaf ( Monodactylus argenteus ( Linnaeus , 1758) )
- Monodactylus falciformis Lacépède , 1801
- Kottelats Silberfinblatt ( Monodactylus kottelati Pethiyagoda, 1991 )
- Seba fin blade ( Monodactylus sebae ( Cuvier , 1829) )
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Schuettea , small pelvic fins, cycloid scales
- Schuettea scalaripinnis Steindachner , 1866
- Schuettea woodwardi ( Waite , 1905)
literature
- Kurt Fiedler: Textbook of Special Zoology, Volume II, Part 2: Fish . Gustav Fischer Verlag Jena, 1991, ISBN 3-334-00339-6
- Joseph S. Nelson : Fishes of the World . John Wiley & Sons, 2006, ISBN 0-471-25031-7
- Günther Sterba : The world's freshwater fish. 2nd Edition. Urania, Leipzig / Jena / Berlin 1990, ISBN 3-332-00109-4 .
Web links
- Fin blades on Fishbase.org (English)