Morphology Data of Procatopus similis
Identification keys
Main Ref. Wildekamp, R.H. and J.R. Van der Zee, 2003
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors

Descriptive characteristics of juvenile and adult

Striking features
Body shape lateral fusiform / normal
Cross section
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

Diagnosis: larger-sized ‘Lampeye’ species with rounded dorsal and anal fin; fin extensions may be present at the upper and lower corners of the caudal fin and at the anal fin; ventral fins inserted below or just behind pectorals; dorsal fin with 9-13 rays; anal fin with 15-19 rays; scales on mid-longitudinal series 27-31 (Ref. 57259).

Colouration: Male colouration: variable in colouration; light olive to light grey body colour, on the sides strong light blue reflections; on the back in some populations a red-brown stripe, parallel to the dorsal profile; the colour of the unpaired fins is variable and ranges from light blue-grey through yellow and orange to red; these fins usually with a pattern of red spots and stripes; sometimes a dark red margin is present; the caudal fin usually light blue reflecting at its base, changing in the colour as found in the other fins; in its central part spots or stripes in red, usually forming crossbars; a red margin at the upper and lower side may be present; fin extensions, when present mostly white (Ref. 57259). Female colouration: simply semi-translucent grey or pale olive; ventral area more white to silver; unpaired fins colourless (Ref. 57259). Both sexes show an orange reflecting upper part at the eye iris (Ref. 57259).

Ease of Identification

Meristic characteristics of Procatopus similis

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series 27 - 31
Scale rows above lateral line
Scale rows below lateral line
Scales around caudal peduncle
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb


Dorsal fin(s)

Fins number 1
Finlets No. Dorsal   
Spines total 0 - 0
Soft-rays total 9 - 13
Adipose fin absent

Caudal fin

Attributes more or less truncate

Anal fin(s)

Fins number
Spines total 1 - 1
Soft-rays total 15 - 19

Paired fins

Pectoral Attributes  
Pelvics Attributes  
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Yap, Sheryl
Modified by Boden, Gert
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