Datnioides
Datnioides is a genus of fish known commonly as tigerfish, tiger perch or freshwater tripletails, but all of these common names are also used for other families.[1] It is the only genus in the family Datnioididae. These fish are found in fresh and brackish waters of rivers, estuaries and coastal areas in South and Southeast Asia,[1] and New Guinea.[2]
| Datnioides | |
|---|---|
 | |
| D. pulcher | |
Scientific classification  | |
| Domain: | Eukaryota |
| Kingdom: | Animalia |
| Phylum: | Chordata |
| Class: | Actinopterygii |
| Order: | Spariformes |
| Family: | Lobotidae |
| Genus: | Datnioides Bleeker, 1853 |
| Type species | |
| Datnioides polota Bleeker, 1853 | |
Some researchers suggest that this family is related to the tripletails, family Lobotidae, while others do not find enough evidence to make the suggestion. The two families share an apparently unique mode of tooth replacement, a trait which might be a synapomorphy.[3]
Characteristics
Datnioides have a total of 24 vertebrae. The dorsal fin has a hard-rayed portion with 12 fin rays, and a soft-rayed portion with 15 to 16 fin rays. Along with the anal fin, which sits towards the rear of the fish, and the round caudal fin, these fins give the appearance of three caudal fins.[3] The ploughshare bone and palatine bone in Datnioides fish are toothless. There are five species of Datnioides that can grow to be 30 to 45 centimeters in length. These fish are predatory and feed on small fish.
Systematics
The Dutch ichthyologist Pieter Bleeker first introduced the genus Datnioides in 1853. In most classifications, these fish are placed in their own family, called Datnioididae. The genera Lobotes and Hapalogenys, which was formerly often placed in the family Haemulidae, are closely related to Datnioides.[4] In the standard work on fish systematics, "Fishes of the World" by Joseph S. Nelson, Datnioides and Lobotes are placed in the family Lobotidae, which was introduced by U.S. ichthyologist Theodore Nicholas Gill in 1861. Gill also introduced the genus Datnioides in 1861.[5]
Species
The currently recognized species in this genus are:[2]
- Datnioides campbelli Whitley, 1939 – New Guinea tiger perch
- Datnioides microlepis Bleeker, 1854 – finescale tigerfish, Indonesian tigerfish
- Datnioides polota (F. Hamilton, 1822) – silver tigerfish
- Datnioides pulcher (Kottelat, 1998) – Siamese tiger perch, Siamese tigerfish
- Datnioides undecimradiatus (T. R. Roberts & Kottelat, 1994) – Mekong tiger perch
References
- Froese, Rainer, and Daniel Pauly, eds. (2013). "Datnioididae" in FishBase. April 2013 version.
- Froese, Rainer and Pauly, Daniel, eds. (2020). Species of Datnioides in FishBase. January 2020 version.
- Hilton, E. J. & W. E. Bemis. (2005). Grouped tooth replacement in the oral jaws of the tripletail, Lobotes surinamensis (Perciformes: Lobotidae), with a discussion of its proposed relationship to Datnioides. Copeia 2005(3), 665-72.
- Jeffrey, Leis; Anthony, Gill (2015). "More than archetypal coral-reef fishes: Revision and relationships of the Acanthuroidei based on adult and larval morphology". Frontiers in Marine Science. 2. doi:10.3389/conf.fmars.2015.03.00088. ISSN 2296-7745.
- Nelson, Joseph S.; Grande, Terry; Wilson, Mark V. H. (2016). Fishes of the world (5th ed.). Hoboken, New Jersey. ISBN 978-1-119-17484-4. OCLC 926623501.
{{cite book}}: CS1 maint: location missing publisher (link)
External links
- Secrets of the Datnoids Tigerfish. datnoidstigerfish.org