Haplochromis snoeksi
| Haplochromis snoeksi | ||||||||||||
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| Scientific name | ||||||||||||
| Haplochromis snoeksi | ||||||||||||
| Lunkayilakio & Vreven , 2010 |
'Haplochromis' snoeksi is a species of cichlid that is only known from the Ngufu River, a right tributary of the Inkisi in the Democratic Republic of the Congo . However, it may occur in the entire catchment area of the Inkisi in the province of Congo Central .
features
The fish species can reach a standard length of about 9 cm. It is elongated and resembles the East African genus Orthochromis . The body height is about 27% of the standard length, the head takes up 30 to 31% of the standard length and the base of the long dorsal fin is half the standard length. The snout (in fish the distance from the tip of the mouth to the front edge of the eye) has a convex profile and is slightly longer than the diameter of the eye. The eyes are bigger than the distance between them. The mouth is terminal. When the mouth is closed, the upper jaw protrudes slightly. The lips are thick but do not come down to the bottom of the eyes. The upper jaw has 3 to 4 rows of teeth, the lower jaw 3 to 5 rows of teeth, a total of 38 to 42 teeth in the outer row of teeth in the upper jaw and 28 to 32 teeth in the lower jaw. The teeth of the outer rows of teeth are double-pointed and medium-sized. In the inner rows of the upper jaw there are 68 to 78 teeth, in the inner rows of the lower jaw there were 62 to 72 closely spaced teeth. The teeth of the inner rows are three-pointed. All scales are comb scales. The caudal fin is scaly. The ends of the dorsal and anal fin do not reach the caudal fin. The tail stalk is significantly longer than it is high. A row of scales around the tail stalk consists of 16 scales.
- Fin formula : dorsal XVI / 9, anal III / 6, pectoral 15, ventral 8.
- Dandruff formula : mLR 32-34, SL 23 / 9-12.
- Gill rake : 7 + 1 + 2.
'Haplochromis' snoeksi is light brown in color, with the back being darker than the sides of the body. The chest, abdomen and pectoral fins are light yellow. The pelvic fins have dark tips. The anal fin shows two or three red egg spots. There is no strip drawing on the sides of the body, as is typical for many cichlids. There is a black spot on each of the gill cover and the base of the caudal fin. The caudal fin is rounded and patterned with small round black spots.
habitat
The well-known habitat of 'Haplochromis' snoeksi is a body of water with strong currents (20 to 60 cm / s) and sandy and muddy soil that is interspersed with stones. The river is about 10 meters wide and 1.2 meters deep at the site. The water temperature is between 22 and 25.6 ° C, the pH value between 6.5 and 7.2, the total hardness between 2 and 5 ° dH and the conductance between 73 and 151.1 μS / cm.
Systematics
'Haplochromis' snoeksi was described in 2010 by the Belgian ichthyologist Emmanuel Vreven and his Congolese colleague Soleil Wamuini Lunkayilakio and named in honor of the Belgian ichthyologist Jos Snoeks . Since the allocation to the genus Haplochromis is only provisional, the genus name Haplochromis was placed between apostrophes by the authors of the first description . Like other 'Haplochromis' species of the Congo and Cuanza , 'Haplochromis' snoeksi is not particularly closely related to the actual Haplochromis species from the catchment area of Lake Victoria and belongs to a different clade within the Haplochromini for which no new generic name has yet been introduced .
literature
- Soleil Wamuini Lunkayilakio, Emmanuel Vreven: `Haplochromis' snoeksi, a new species from the Inkisi River basin, Lower Congo (Perciformes: Cichlidae). In: Ichthyol. Explor. Freshwat. Volume 21, No. 3, September 2010, pp. 279-288.
Web links
- Haplochromis snoeksi on Fishbase.org (English)