Main Ref. | Trewavas, E., 1983 |
Appearance refers to | Male; Female |
Bones in OsteoBase |
Specialized organs | no special organs |
Different appearance | males alike females |
Different colors | males alike females |
Remarks |
Striking features | none |
Body shape lateral | short and / or deep |
Cross section | compressed |
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: length of caudal peduncle 0.6-0.9 times in its depth (Ref. 53405). Melanin pattern in mature fishes including black patches on lower parts of head, 4-7 vertical bars of irregular shape on flanks and bar on base of caudal; 1-4 black spots on basal part of dorsal fin, sometimes bounded by with white tilapia-mark; no conspicuous black tips at corners of caudal fin (Ref. 2). Description: outer jaw teeth bicuspid, inner jaw teeth tricuspid, posterior teeth on pharnygeal bone bicuspid; lower pharyngeal bone long and narrow; micro-gillrakers present; scales cycloid (Ref. 53405). Coloration: in life: ground colour silvery ; upper lip, snout, occiput and anterior part of back yellowish-green, lower lip white; some black spots just below lower lip, belly white; scales on sides grey-edged, with yellow spot at centre; grey scale margins confluent, forming some irregular black spots or vertical bars; dorsal, anal and caudal fins greyish, soft part of dorsal fin with some transparent spots; upper margin of dorsal and caudal fins yellow-orange; 1-3 black spots along base of soft part of dorsal fin; some black spots at base of caudal fin; anterior margin of pelvics yellowish-white (Ref. 53405). |
Ease of Identification |
Lateral Lines | 2 Interrupted: No |
Scales on lateral line | 27 - 30 |
Pored lateral line scales | |
Scales in lateral series | |
Scale rows above lateral line | 3 - 3.5 |
Scale rows below lateral line | |
Scales around caudal peduncle | |
Barbels | 0 |
Gill clefts (sharks/rays only) | absent |
Gill rakers | |
on lower limb | 14 - 19 |
on upper limb | |
total | |
Vertebrae | |
preanal | |
total | 27 - 28 |
Attributes | extending over most of the back length |
Fins number | 1 |
Finlets No. | Dorsal 0 |
Ventral 0 | |
Spines total | 15 - 16 |
Soft-rays total | 11 - 14 |
Adipose fin | absent |
Attributes | more or less truncate; more or less normal |
Fins number | 1 |
Spines total | 3 - 3 |
Soft-rays total | 7 - 11 |
Pectoral | Attributes more or less normal |
Spines | |
Soft-rays | |
Pelvics | Attributes more or less normal |
Position thoracic | |
Spines | |
Soft-rays |