Krobia is a genus of the subfamily Cichlasomatinae, tribe Cichlasomatini.





Sven O Kullander


Krobia Kullander & Nijssen


Krobia Kullander & Nijssen, 1989. Cichlids of Surinam, p. 148 (type species by original designation Acara guianensis Regan). — Feminine.

Krobia sp., freshly preserved specimen from the Kourou River, French Guiana, NRM 27963. Photo © S.O. Kullander
Krobia sp, freshly preserved specimen from the Kourou River, French Guiana, NRM 27963. Photo: S.O. Kullander.


Moderate-sized South American cichlids (to 128 mm SL) with four dentary lateralis foramina, distinguished from all other cichlids by characters in combination: uniserial predorsal squamation; narrowly scaled or naked vertical fins; blotchy lateral band from head toward end of base of dorsal fin; lateral line sequence dorsally on caudal fin situated between rays D3 and D4; similar to Bujurquina, Tahuantinsuyoa and 'Aequidens' pulcher in having ledges forming a furrow for the hyoid artery dorsally on the ceratohyal, though lower than in the listed genera.

Other characters of Krobia include lip folds of American type, both discontinuous; jaw teeth caniniform, little recurved; premaxilla without rostral foramen; 12+13 vertebrae; 2 supraneurals; 3-4 vertebrae within caudal peduncle; parhypural spine present; paired short hypapophyses on 4th vertebra; microbranchiospines externally on 2nd to 4th arches, variably internally; externally on first gill arch 1-2 epibranchial and 3-5 ceratobranchial gill rakers; 2-3 toothplates on 4th ceratobranchial; wide epibranchial 1; rod-like pharyngobranchial 1; minute interarcual cartilage; moderately wide cephalic lateralis canals and foramina; flank and chest scales ctenoid, large, squ. long. 23-24, modally 23; upper lateral line in 3rd horizontal scale series above the lower, at 3 (initially) to 1 1/2 (terminally) scales distance from dorsal fin; prepelvic scales cycloid in median and 2 parallel series on each side; naked preoperculum; 16 circumpeduncular scale series; operculum with 2 vertical series of scales; dorsal fin scaled; pectoral and pelvic fins naked; accessory caudal fin lateral lines between rays D3-D4 and V4-V5 or absent; pectoral fin asymmetrical, 4th ray longest; pelvic fin with first ray longest; dorsal fin with 13-15 spines, 9-11 rays (mode D. XIV.10); anal fin with 3 spines, 7-9 (modally 8) rays; caudal fin subtruncate or slightly emarginate, with 3 procurrent and 8 principal rays in each lobe; 4 vertical bars posterior to the one containing midlateral spot; three facial stripes between eyes; suborbital stripe present at all sizes; no blue stripes or dots on head sides; caudal fin base spot superior; lateral band running to or toward end of base of dorsal fin; caudal fin immaculate or dusky with clear dots, which are smaller in ventral than in dorsal lobe. (Adapted from Kullander & Nijssen, 1989.)

Included species

Krobia guianensis (Regan, 1905)
Krobia itanyi (Puyo, 1943)

Three undescribed species are recognized, two from French Guiana and one from the Rio Xingu (Kullander & Nijssen, 1989).

Key to species

Body depth 40.0-45.3% of SL; lateral band ending well in advance of end of soft dorsal fin base; three facial stripes clearly visible......................Krobia itanyi
Body depth 41.3-50.8% of SL; lateral band continued to end of soft dorsal fin base; two posterior of three facial stripes indistinct................Krobia guianensis


Krobia is a Surinamese vernacular name applied on several cichlid species, including Krobia guianensis.

Geographical distribution

The generic range includes the Guianas, the Araguari, the Amapá and the Xingu river drainages.


KULLANDER, S.O. & H. NIJSSEN.1989. The cichlids of Surinam. E.J. Brill, Leiden and other cities, XXXIII+256 pp.