Morphology and condition factor of signal barb fish (Labiobarbus festivus) at the Tasik River, South Labuhanbatu Regency, Sumatra Utara Province

The purpose of this study was to determine the morphometric and meristic characteristics, growth Signal barb fish in Tasik river. method used research is a survey method. Morphometric characteristics Bodyweight (BW) ranges from 4-73 gr, Total Length (TL), Standard 6.3-15.5 mm (SL), Head (HL) 1.8-2.5, Snout (SL) 0.5, Dorsal Fin Height (DFH) 2.3, (DFL) 3-7, Eye Diameter (EM) 0.8, Tail Trunk (TTH) 0.8-1.8, Body (BH) 2-4.5, Pectoral (PFL) 2 cm Belly (BFL) cm. are number Linnea Literalis (LL) as many 35-38 scale, 13 Circular Scales (CBS), 11-13 Front (FFDS), Around (SAT) total 5, (DF) DI. 23-26 fin radii, Ventral (VF) 9 (PF) 11-14, Anal (AF) 7 radii Caudal (CF) 20-22 radii. pattern signal River negative allometric with condition factor value an average 0.42