Morphology Data of Praealticus semicrenatus
Identification keys
Abnormalities
Main Ref. Allen, G.R. and M.V. Erdmann, 2012
Appearance refers to
Bones in OsteoBase

Sex attributes

Specialized organs
Different appearance
Different colors
Remarks

Descriptive characteristics of juvenile and adult

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

Color in life unknown. Preserved specimen with alternating light and dark bands below eye, dark blotch behind eye and on upper operculum, and around 7-8 bifurcate dark bars on body. Dorsal fin deeply notched; pectoral rays typically 15; segmented caudal rays typically 13-14, middle 6-7 unbranched; pinnately branched supraorbital tentacle; nape cirri absent; posterior rim of anterior nostril with small cirrus (typically unbranched); upper lip margin laterally crenulate; lower lip margin smooth; male with occipital crest; last dorsal ray and caudal peduncle connected by membrane; elongate body, depth at anal-fin origin ca. 6.6-8.1 in SL. Maximum length 6 cm TL (Ref. 90102).

Ease of Identification

Meristic characteristics of Praealticus semicrenatus

Lateral Lines Interrupted: No
Scales on lateral line
Pored lateral line scales
Scales in lateral series
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
on upper limb
total
Vertebrae
preanal
total

Fins

Dorsal fin(s)

Attributes extending over most of the back length
Fins number 1notched No
Finlets No. Dorsal   
Ventral  
Spines total 13 - 13
Soft-rays total 18 - 19
Adipose fin

Caudal fin

Attributes more or less truncate; more or less normal

Anal fin(s)

Fins number
Spines total 2 - 2
Soft-rays total 19 - 20

Paired fins

Pectoral Attributes  more or less normal
Spines     
Soft-rays   14 - 15
Pelvics Attributes  more or less normal
Position    jugular
Spines     1
Soft-rays   4 - 4
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
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