Morphology Data of Hirundichthys rondeletii
Identification keys
Main Ref. Carpenter, K.E. and N. De Angelis (eds.), 2016
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 elongated
Cross section angular
Dorsal head profile
Type of eyes
Type of mouth/snout
Position of mouth
Type of scales

This species is distinguished by the following characters: elongated body is nearly rectangular in cross-section, almost flat ventrally, its depth 6.2 to 7.9 times in standard length (SL); 45-47 vertebrae; 25-30 predorsal scales; scales in transverse row 6 to 7.5, usually 6.5; the head 4.2-5.2 times in SL: eye 3.1-3.3 times in head; subequal jaws; jaw teeth conspicuous, conical; no palatine teeth; gill rakers on first arch 25-31; dorsal fin low, with 10-12 rays; anal fin with 10-13 rays, originating slightly before, or 1-2 rays behind dorsal-fin origin; pectoral fins 1.3-1.4 times in SL and with 16-18 rays, first 2 rays unbranched; pelvic fins 2.8-3.4 times in SL, inserted slightly nearer to posterior margin of opercle than origin of caudal fin base: juveniles without barbel (Ref. 109257). Colour of body dark, iridescent blue above, silvery white below; dorsal and caudal fins greyish, other fins hyaline (Ref. 2797); pectoral fins black without unpigmented cross-band and with a narrow light outer margin; pelvic fins usually without black spot (Ref. 109257); juveniles elongate, paired fins black (Ref. 2797).

Ease of Identification

Meristic characteristics of Hirundichthys rondeletii

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
Gill clefts (sharks/rays only)
Gill rakers
on lower limb
on upper limb
total 24 - 31
total 45 - 47


Dorsal fin(s)

Fins number 1
Finlets No. Dorsal   0 - 0
Ventral  0 - 0
Spines total 0 - 0
Soft-rays total 10 - 12
Adipose fin absent

Caudal fin


Anal fin(s)

Fins number 1
Spines total 0 - 0
Soft-rays total 10 - 13

Paired fins

Pectoral Attributes  
Soft-rays   16 - 18
Pelvics Attributes  
Spines     0
Soft-rays   6 - 6
Main Ref. (e.g. 9948)
Glossary ( e.g. cephalopods )
Entered by Garilao, Cristina V.
Modified by Capuli, Estelita Emily
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cfm script by eagbayani, 17.10.00, php script by rolavides, 13/03/08 ,  last modified by sortiz, 06.27.17