Country Species Summary

Amphilius jacksonii in Uganda
Marbled mountain catfish

Amphilius jacksonii Boulenger, 1912
Family:	Amphiliidae (Loach catfishes) , subfamily: Amphiliinae	picture (Amjac_u1.jpg) by Seegers, L.
Order:	Siluriformes (catfish)
Class:	Actinopterygii (ray-finned fishes)
FishBase name:	Marbled mountain catfish
Max. size:	15.0 cm TL (male/unsexed; Ref. 27292)
Environment:	demersal
Climate:	tropical; 20 - 24°C; 5°N - 3°S
Global Importance:
Resilience:	High, minimum population doubling time less than 15 months (tmax<2; K=0.19-0.39)
Distribution:	Africa: Hima River, Aduka and Agoye Rivers (Uganda), Rutshuni River (Lake Edward) (Democratic Republic of the Congo).
Diagnosis:	Vertebrae: 31-33. Distinguished from other east and southern African species of Amphilius, including the wide ranging A. uranoscopus, in having fewer total vertebrae, a mode of 6+7 principal caudal rays, and a crenulated epidermal fold at the base of the caudal fin; the latter character is shared with A. platychir and at least some other west African species. Differs further by the following combination of characters (but not all unique); dorsal and pectoral spines absent; dorsal fin with 7 soft rays; short adipose fin not adnate with caudal fin; pectoral fin with 8-10 soft rays; anal-fin rays 7-10; forked caudal fin with rounded lobes; 31-33 free vertebrae; and variable, heavily mottled pigmentation. Distinguished from other congeners in the Congo [=Zaire] River, except A. angustifrons and A. notatus, by having fewer total free vertebrae (31-33 vs. 33-40); differs from these two species by fewer pectoral rays (8-11, mode of 10, vs. 8-9, mode of 9), anal-fin rays (mode of 10 vs. 9), and mensural characters (Ref. 51677).
Biology:	Occurs in flowing, well-oxygenated waters (Ref. 7248). Feeds predominantly on benthic aquatic insects (Ref. 51677). Iteroparous, with asynchronous ovarian development (Ref. 51677)
Threatened:	, (Ref. 36508)
Dangerous:	harmless
Coordinator:
Main Ref:	Skelton, P.H. and G.G. Teugels. 1986. (Ref. 3818)
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Uganda country information
Common names:	[ No common name ]	Ref:
Status:	native	Ref: Walsh, S.J., L.J. Chapman, A.E. Rosenberger and C.A. Chapman, 2000
Salinity:	freshwater
Abundance:	common (usually seen)	Ref: Walsh, S.J., L.J. Chapman, A.E. Rosenberger and C.A. Chapman, 2000
Importance:	of no interest	Ref: Walsh, S.J., L.J. Chapman, A.E. Rosenberger and C.A. Chapman, 2000
Uses:	no uses
Comments:	Not threatened (Ref. 51677).
Country Information:	www.cia.gov/cia/publications/factbook/geos/ug.html
National Fisheries Authority:	isp.msu.edu/AfricanStudies/Plea/firi.htm
Occurrences:	Occurrences Point map
Main Ref:	Skelton, P.H. and G.G. Teugels, 1986
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Modified: Luna, Susan M.

Entered: Sa-a, Pascualita

CGNET - US

Page created by: Eli, 20.10.03, last modified by Eli, 26.06.07

	Ref.:		Glossary
		(e.g. 9948)		(e.g. cephalopods)
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