Fig. 35

Body elongate; greatest depth contained 2.2 to 2.5, head depth 2.8 to 3.1 and caudal peduncle depth 5.4 to 6.1 times in SL; head length 2.6 to 3.2 and caudal peduncle length 6.8 to 8.8 in SL; snout length 3.1 to 3.7, horizontal orbital diameter 2.6 to 3.3 and least interorbital width 2.1 to 5.0 in HL. Mouth terminal; premaxilla with 2 and dentary with 2 or 3 conical teeth rows anteriorly. Upper lateral line with 12-15 pored scales, lower lateral line with 6 to 8 pored scales and longitudinal series with 22- 25 scales. Transversal series above upper lateral line with 2½ to 3½ and below lower lateral line with 4 or 5 scale rows. Dorsal fin with XIV-XV,7-8, rarely 10, pectoral fin with 11-14, pelvic fin with I,5 and anal fin with III,7-9 rays (Ottoni, Costa, 2009). Ground color greyish; head and caudal peduncle with iridescent blue marks; seven darkbrown transverse bars on flank; one black rounded blotch on bar 5 and another at caudal-fin base. Dorsal and caudal fins yellowish with iridescent blue spots and distal margins iridescent blue; pectoral fin hyaline; pelvic and anal fins yellowish with iridescent blue stripes.

Maximum standard length. 34.0 mm.

Distribution. Rio Araguaia basin.

Remarks. Laetacara araguaiae was identified as Laetacara sp. by Graça, Pavanelli (2007). Ottoni, Costa (2009) described the new species, L. araguaiae, from the rio Verde and rio Araguaia basins, and redescribed L. dorsigera (Heckel, 1840) from the Guaporé, Paraná-Paraguay system. It is a non-native species from the upper rio Paraná basin, and its occurrence can be associated with the aquarium trade.