Saw scale perch
| Saw scale perch | ||||||||||||
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Pristolepis marginata (above) and |
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| Systematics | ||||||||||||
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| Scientific name of the family | ||||||||||||
| Pristolepididae | ||||||||||||
| Roberts , 1989 | ||||||||||||
| Scientific name of the genus | ||||||||||||
| Pristolepis | ||||||||||||
| Jerdon , 1849 |
The sawfish or scallop perches ( Pristolepis , Pristolepididae) are a genus and family from the order Anabantiformes that is poor in species and comprises only eight species . Three species occur in Myanmar , Thailand and Indochina in the river basin of the Mekong , the Mae Nam Chao Phraya and the Mae Nam Mae Klong , on the Malay Peninsula and the Indonesian islands of Sumatra , Borneo , Bangka and Belitung , the other five in the waters Keralas (South India ).
Features and way of life
Saw scale perch grow to be 15 to 20 cm long. Their body is stocky, high back, flattened on the sides and of a brownish-gray, greenish or yellow-green color. The ventral side is lighter, mostly yellowish. The lateral line is interrupted below the soft-rayed part of the dorsal fin, the last part extends to the caudal fin stalk. On the flanks there are, most clearly in Pristolepis fasciata , six to twelve blackish vertical stripes.
- Fins formula for Pristolepis fasciata : Dorsal XIII – XVI / 14–16, Anale III / 8–9, Ventral I / 5–6.
The mouth is relatively small, narrow and can only be slightly pushed forward. Sawfish perch live in slowly flowing or stagnant waters rich in vegetation. They eat thread algae, aquatic plants and land plants submerged during floods, fruits, seeds, insects and small crustaceans.
Systematics
In the past, the genus Pristolepis was assigned as a subfamily Pristolepidinae to the Nanderbarschen (Nandidae), with the restriction of the Nandidae to the genus Nandus by Ralf Britz and Sven O. Kullander, they were raised to the family rank.
species
To date, eight species have been described:
- Striped sawscale perch , Pristolepis fasciata (Bleeker, 1851)
- Indonesian sawscale perch , Pristolepis grootii (Bleeker, 1852)
- Pristolepis malabarica , Günther, 1864
- Malabar sawscale perch , Pristolepis marginata Jerdon, 1849
- Pristolepis pauciradiatus Plamoottil & Win, 2017
- Pristolepis pentacantha , Plamoottil, 2014
- Pristolepis procerus , Plamoottil, 2017
- Pristolepis rubripinnis , Britz, Kumar & Baby, 2012
literature
- 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
- Sawscale perch on Fishbase.org (English)