Marcusenius dundoensis
Behaviour:
unknown
Size:
to 123 mm SL
Distribution:
Marcusenius dundoensis is currently known only from its type locality in the region near Dundo in Angola.
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Mormyridae
Marcusenius dundoensis (Poll 1967)
EOL Text
Range Description:
Marcusenius dundoensis is known from a restricted area in the Kwango and Kasai River systems, Central Congo River basin in Angola. It is expected to be more widespread in this region though.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
| Source | http://www.iucnredlist.org/apps/redlist/details/181776 |
Conservation Actions:
Conservation Actions
None known.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | International Union for Conservation of Nature and Natural Resources |
| Source | http://www.iucnredlist.org/apps/redlist/details/181776 |
Africa: rivers Luachimo, Chiumbe and Kwango (middle Congo River basin) in Angola (Ref. 11970).
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Pascualita Sa-a, FishBase |
| Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=10890 |
Distribution:
Marcusenius dundoensis is currently known only from its type locality in the region near Dundo in Angola.
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | Sullivan, John P., Sullivan, John P., Africhthy |
| Source | http://mormyrids.lifedesks.org/pages/2107 |
Southern Africa.
Dorsal spines (total): 0; Dorsal soft rays (total): 22; Analspines: 0; Analsoft rays: 27 - 28
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Pascualita Sa-a, FishBase |
| Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=10890 |
Size:
to 123 mm SL
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | Sullivan, John P., Sullivan, John P., Africhthy |
| Source | http://mormyrids.lifedesks.org/pages/2107 |
Maximum size: 123 mm SL
Max. size:
12.3 cm SL (male/unsexed; (Ref. 27691))
| License | http://creativecommons.org/licenses/by-nc/3.0/ |
| Rights holder/Author | Pascualita Sa-a, FishBase |
| Source | http://www.fishbase.org/summary/SpeciesSummary.php?id=10890 |
Diagnostic Description:
From Boden et al. (1997).
Diagnosis. Dorsal-fin origin located behind anal-fin origin, dorsal-fin base terminating before anal-fin base. Dorsal-fin margin concave and pointed, its height the same as the length of its base. Dark band between dorsal and anal fin generally clearly visible. Lateral-line scales number 51-61, four or five, rarely three, lateralline scales on the dark coloured transversal band. Dorsal fin short, with 20-23 rays. Anal fin longer with 26-30 rays.
Description. Mouth terminal. Teeth bicuspid, five in upper jaw, six in lower jaw. Sub-mental swelling large and rounded, its beginning at its posterior end at a point below the anterior margin of the eye. Snout rounded and blunt. Anterior nostril in the middle between the tip of the snout and the anterior border of the eye. Posterior nostril at 0·25-0·33 distance from the eye. Eye diameter 38-66% of snout length. Preanal distance shorter than predorsal distance. Anal-fin base longer than dorsal. Dorsal-fin height about the same as its base. Anal-fin height less than its base. Pectoral fin twice as long as pelvic fin and reaching the pelvic-fin base. Distance between pectoral and pelvic fins as long as pelvic-fin length or a little shorter. Pelvic-fin base midway between pectoral-fin base and anal-fin origin or closer to the pectoral. Length of pelvic fin half the distance between pelvic-fin base and anal-fin origin. Compared to other species in this group, M. dundoensis has a low number of dorsal- (20-23) and anal- (26-30) fin rays, a high number of lateral-line scales (51-61) and there are 21-25 scales between dorsal- and anal-fin origins. Dark band between origin of dorsal and anal fins covered with four or five (rarely three) lateralline scales. Caudal peduncle and head darker than the rest of the body except for the dark transverse band between dorsal and anal fins. The electric organ is composed of electrocytes with non-penetrating stalks innervated on the posterior side (NPp).
| License | http://creativecommons.org/licenses/by-nc-sa/3.0/ |
| Rights holder/Author | Sullivan, John P., Hopkins, C.D., Boden, G., Teugels, G.G., Africhthy |
| Source | http://mormyrids.lifedesks.org/pages/2107 |