Skip to main content Skip to main navigation menu Skip to site footer
Responsive image
Issue: Vol. 183 No. 1: 16 Apr. 2003
Type: Article
Published: 2003-04-18
DOI: 10.11646/zootaxa.183.1.1
Page range: 1–7
Abstract views: 53
PDF downloaded: 4

Acrochordonichthys gyrinus, a new species of akysid catfish (Teleostei: Siluriformes) from Thailand

Fisheries Museum Institute, Department of Fisheries, Kasetsart University, Chatuchak, Bangkok 10900, Thailand
Fish Division, Museum of Zoology, University of Michigan, 1109 Geddes Avenue, Ann Arbor, Michigan 48109-1079, USA
Pisces Akysidae catfish Yom River Chao Phraya drainage

Abstract

Acrochordonichthys gyrinus, a new species of akysid catfish belonging to the A. ischnosoma species group, is described from the Chao Phraya River drainage in Thailand. It can be distinguished from congeners by a concave posterior margin of the pectoral fin and the unique combination of the following characteristics: head depth 9.8–11.4% SL; dorsal to adipose distance 7.4–8.6% SL; body depth at anus 8.3–10.5% SL; maximum width of humeral process 16.3% its length; and anterior margin of anal fin and posterior margin of adipose fin straight. This species represents the northernmost distribution of the genus.

References

  1. Eschmeyer, W. (1998) Catalog of Fishes. California Academy of Sciences, San Francisco, 2905 pp.

    Ng, H.H. & Ng, P.K.L. (2001) A revision of the akysid catfish genus Acrochordonichthys Bleeker. Journal of Fish Biology, 58, 386–418.

    Ng, H.H. & Tan, H.H. (2002) Redescription of Acrochordonichthys ischnosoma Bleeker, 1858, a poorly-known species of akysid catfish (Teleostei: Siluriformes) from Sumatra and Java. The Raffles Bulletin of Zoology, 50, 449–452.

    Vidthayanon, C., Karnasuta, J. & Nabhitabhata, J. (1998) Diversity of Freshwater Fishes in Thailand. Office of Environmental Policy and Planning, Bangkok, 102 pp.