/siluriformes/siluridae/silurichthys/exortivus/1.jpg "Silurichthys exortivus")
Lateral view of holotype/siluriformes/siluridae/silurichthys/exortivus/2.jpg "Silurichthys exortivus")
Dorsal view of holotype/siluriformes/siluridae/silurichthys/exortivus/3.jpg "Silurichthys exortivus")
Ventral view of holotype
 All Fishes Data Sheet | |
|---|---|
| Scientific Name | Silurichthys exortivus Ng & Kottelat, 2022 |
| Common Name | |
| Type Locality | Belayan River system, Mahakam River drainage, REA Plantations, Long Buluh Damai Estate, Kalimantan Timur, Borneo, Indonesia, 0°14'29"N, 116°19'14"E. |
| Pronunciation | Seel loo reek thees |
| Etymology | From Silurus and the Greek ichthyos, meaning fish; in reference to the general resemblance to members of the genus Silurus. The species name comes from the Latin adjective exortivus, meaning “towards the sunrise”. This name is used in allusion to distribution of this species (eastern Borneo), which represents the easternmost limit of its distribution. |
| Species Information | |
| Identification | Silurichthys exortivus can be distinguished from all congeners in having 4 (vs. 6–7) principal rays on the upper caudal-fin lobe, lacking (vs. having) a dorsal fin, and, except for S. sanguineus, in lacking (vs. having) pelvic fins. It further differs from S. ligneolus and S. sanguineus in having a caudal fin with distinct, asymmetrical lobes (vs. obliquely truncate and without distinct lobes), and in the number of anal-fin rays (54 vs. 44–45 in S. ligneolus and 60 in S. sanguineus). The following combination of characters additionally distinguishes it from congeners: body depth at anus 14.0% SL, caudal peduncle depth 5.1% SL, upper lobe of caudal fin 1.1 times longer than lower lobe, 1 raker on first gill arch, 48 vertebrae and brown mottled body. |
| Habitat Information | |
| Distribution | Mahakam River drainage in eastern Borneo. Pacific, Greater Sunda Island Rivers, Borneo Waters, East Borneo Waters, Mahakam (click on these areas to find other species found there) Login to view the map. |
| IUCN Red List Category | Not Evaluated |
| Husbandry Information | |
| Breeding Reports | There is no breeding report. |
| Further Information | |
| Reference | Zootaxa 5138 (no. 2), pp 186, Fig. 1. |
| Registered Keepers | There is no registered keeper. |
| Wishlists | Love this species? Click the heart to add it to your wish list. There is no wish to keep this species. |
| Spotters | Spotted this species somewhere? Click the binoculars! There is but a single record of this fish being seen, view it. |
| Forum BBCode | |
 | Look up S. exortivus on PlanetCatfish.com |
 | Look up S. exortivus on Fishbase |
 | Look up S. exortivus on Encyclopedia of Life |
 | Look up S. exortivus on Global Biodiversity Information Facility |
| LFS label creator ARN ref:1.7.12.8597 | |
| Last Update | 2025 Jan 02 00:43 (species record created: 2022 May 16 17:03) |