Morphology Data of Stolothrissa tanganicae
Identification keys
Abnormalities
Main Ref. Whitehead, P.J.P., 1985
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs no special organs
Different appearance males alike females
Different colors males alike females
Remarks

Descriptive characteristics of juvenile and adult

Striking features none
Body shape lateral elongated
Cross section oval
Dorsal head profile more or less straight
Type of eyes more or less normal
Type of mouth/snout more or less normal
Position of mouth terminal
Type of scales cycloid scales
Diagnosis

Diagnosis: Body slender, its depth about 17-22% of standard length; 13-14 pre-pelvic and 8-9 post-pelvic scutes, with pre-pelvic scutes not strongly keeled, beginning behind base of last pectoral finray, but post-pelvic scutes with sharp spines; maxilla blade about 2.25 times as long as its shaft, but not continued forward to hind tip of pre-maxilla; posterior supra-maxilla diamond-shaped or more or less rhomboidal, approximately symmetrical; lower gillrakers long and slender, 36-42; a distinct silver stripe along flanks, broadest over tips of pelvic fins (Ref. 188, 93833). It resembles Limnothrissa miodon of Lake Tanganyika, which is slightly deeper-bodied, has a larger eye, about equal to head length behind eye, and a maxilla blade continued forward to hind tip of pre-maxilla (Ref. 188).

Description: Body slender, its depth about 17-22% of standard length (Ref. 188). Snout narrow and pointed, rather longer than eye diameter, which is 3.5 times in head length; lower jaw slightly projecting; maxillary not or barely reaching vertical from anterior margin of eye (Ref. 2263, 5393). Lower gillrakers long and slender, 36-42; upper gill rakers 16-17 (Ref. 188, 5393). Dorsal fin with 15-16 rays, origin nearly equidistant from end of snout and base of caudal fin; anal fin with 16-17 rays; pelvic fin with 1 unbranched and 7 branched rays, below or a little in advance of middle of dorsal fin (Ref. 188, 2263, 36901, 45485, 93833). Scales small; 36-46 scales in longitudinal series; 13 transverse scales (Ref. 188, 2263, 36901). With 13-14 pre-pelvic and 8-9 post-pelvic scutes; pre-pelvic scutes not strongly keeled, beginning behind base of last pectoral finray; post-pelvic scutes with sharp spines (Ref. 188, 2263, 36901, 45485, 93833). Vertebrae: 44 (Ref. 45485).

Colouration: General body colour whitish, snout and upper side of head olive-yellow, dorsal side yellow-grey; side of head and lateral band silvery; ventral regions white; dorsal and caudal fin greyish (Ref. 36901). A distinct silver stripe along flanks, broadest over tips of pelvic fins, bordered dorsally by a dark line (Ref. 188, 5393, 36901).

Ease of Identification

Meristic characteristics of Stolothrissa tanganicae

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series 36 - 46
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Barbels
Gill clefts (sharks/rays only)
Gill rakers
on lower limb 36 - 42
on upper limb 16 - 17
total
Vertebrae
preanal
total 44 - 44

Fins

Dorsal fin(s)

Attributes no striking attributes
Fins number 1
Finlets No. Dorsal   
Ventral  
Spines total 0 - 0
Soft-rays total 15 - 16
Adipose fin absent

Caudal fin

Attributes forked; more or less normal

Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 16 - 17

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   
Pelvics Attributes  more or less normal
Position    abdominal  beneath origin of D1
Spines     0
Soft-rays   8 - 8
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Binohlan, Crispina B.
Modified by Boden, Gert
Comments & Corrections
Sign our Guest Book
Back to Search
cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17