male sex organ very long, + hooks, tip curved forward
Poeciliopsis turrubarensis (Meek, 1912)
Barred livebearer, Turraba toothcarp
Body elongate (depth ~ 29% of SL), upper head profile straight; head small, rounded; eye 1/3 of head length; mouth small, relatively narrow, with small side clefts; outer series of teeth larger; 15-22 gill rakers; dorsal fin I, 7, origin over last rays of anal fin; pectoral about as long as head, generally not reaching to middle of pelvic fin; anal fin II+ 6-8, rounded; fins larger in male; pelvic rays 7 & 8 distorted, converging or in contact at midlength; male sex organ a tube on left side formed by folded anal fin rays, long (reaches to or nearly to the base of the tail fin) and slender, organ long ( ~ 2x head length), with ~ 16 hooks along the rear edge of the shaft, tip of shaft curved forward; scales smooth, 27-30 in lateral series, 7 rows above lateral line.
Both sexes olive above, grey below; 6-10 well defined dark bars on flanks of front ¾ of body; dark line along midline from anal fin to tail fin; fins plain dusky, or pelvics tinged with yellow; males with yellow belly.
Size: reaches 9 cm (males are much smaller than females).
Habitat: lives in fresh, brackish and saltwater, in coastal lagoons and rivers.