Lamprologus lethops
| Lamprologus lethops | ||||||||||||
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| Systematics | ||||||||||||
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| Scientific name | ||||||||||||
| Lamprologus lethops | ||||||||||||
| Roberts & Stewart , 1976 |
Lamprologus lethops is the only known blind cichlid species . It occurs in the lower Congo . The only known site is in a rapids area near Bulu, west of Luozi in the province of Bas-Congo . The Congo is 45 to 150 meters deep at the site and has an extremely strong current there.
features
The holotype of Lamprologus lethops is only 2.6 cm long. The height of the holotype is 17.9% of the standard length . Like most Lamprologini , Lamprologus lethops has a cylindrical elongated body. The eyes are greatly reduced and overgrown by thick skin, the body without pigment and rosy. The head is flattened; the nostrils high, fleshy, and ending in a well-developed tube. Both jaws are covered with single-pointed teeth arranged in several rows. In both jaws there are six enlarged canines curved backwards. The gill rakes are thin, long and not studded with teeth. There are four pores of the sensory system on the lacrimal bone . The scaling of the sides of the body is irregular, i. H. the scales are not in clearly recognizable, parallel rows. The scaly area on the top of the head extends backwards far beyond the dorsal fin base. Supraneuralia are absent. The fin rays of the dorsal and anal fin increase in height towards the rear. Both are scaly and end in pointed filaments that reach to the rounded, mostly scaled caudal fin.
- Fin formula : dorsal XX / 7, anal VI – VII / 5–6, caudal 14.
- Scale formula : SL 43–49. (The highest number of all Lamprologus species from the Congo)
literature
- Robert C. Schelly & Melanie LJ Stiassny: Revision of the Congo River Lamprologus Schilthuis, 1891 (Teleostei: Cichlidae), with Descriptions of Two New Species American Museum of Natural History 2004 ISSN 0003-0082 , Number 3451, 40 pp., August 23 , 2004
- Anton Lamboj: The Congo System - Cichlid Genera and Species (PDF; 5.8 MB). in DCG -Information 43 (5): 94-112
Web links
- Lamprologus lethops on Fishbase.org (English)
- Lamprologus lethops inthe IUCN 2013 Red List of Threatened Species . Posted by: Moelants, T., 2009. Retrieved January 25, 2014.