Abstract
A new species of catfish in the genus Clarias is described from the Barito River drainage in southern Borneo. Clarias insolitus can be clearly distinguished from all other Southeast Asian Clarias species in having a long and thin anterior fontanel and hypertrophied sensory canal pores on the head and body that are easily visible to the naked eye. Additional diagnostic characters not unique to this species are a uniform violet-gray color without any white spots on body and prominent serrations on the anterior edge of the pectoral spine.References
Leviton, A.E., Gibbs, R.H.Jr., Heal, E. & Dawson, C.E. (1985) Standards in herpetology and ichthyology: Part I. Standard symbolic codes for institutional resource collections in herpetology and ichthyology. Copeia, 1985, 802–832.
Ng, H.H. (1999) Two new species of Clarias from Borneo (Teleostei: Clariidae). The Raffles Bulletin Zoology, 47, 17–32.
Ng, H.H. (2001) Clarias microstomus, a new species of clariid catfish from eastern Borneo (Teleostei: Siluriformes). Zoological Studies, 40,158–162.
Roberts, T.R. (1994) Systematic revision of Asian bagrid catfishes of the genus Mystus sensu stricto, with a new species from Thailand and Cambodia. Ichthyological Exploration of Freshwaters, 5, 241–256.
Tan, H.H. & Ng, H.H. (2000) The catfishes (Teleostei: Siluriformes) of central Sumatra. Journal of Natural History, 34, 267–303.
Teugels, G.G. (1986) A systematic revision of the African species of the genus Clarias (Pisces; Clariidae). Annales Musée Royal de l’Afrique Centrale. Sciences Zoologiques, 247, 1–199.
Teugels, G.G., Diego, R.C., Pouyaud, L. & Legendre, M. (1999) Redescription of Clarias macrocephalus (Siluriformes: Clariidae) from South-east Asia. Cybium, 23, 285–295.