The objective of the study was to describe the total postlarval length of Trichomycterus rivulatus Valenciennes, 1846 (suche) under controlled conditions. A total of 887 postlarvae of T. rivalatus after 25 days post-hatching was used as biological material. Water quality (temperature, dissolved oxygen and pH) was controlled. Before each feeding, siphoning was done to remove food debris and 90% of the water volume was replaced in all treatments. Growth (total length) was measured with a millimeter ruler (precision ± 0.01) at the beginning and end of the experimental phase. Survival for each experimental treatment before live feed supply was: T2 = 99.66% > T1 = 98.97% > T3 = 97.63%. At 21 days the postlarvae showed an average total length of 21.6 ± 0.51 mm, while at 45 days the total length was 30.53 ± 0.52 mm. A statistical difference was found between the total length at 21 and ...

  The aim of the study was to describe the exogenous larval feeding and survival of Orestias luteus (Valenciennes, 1846) under controlled conditions. The study was carried out in the prototype culture laboratory of the Fundación Titicaca Perú (FUNTI-PERU) in the city of Puno, Peru. Biological material was used, 896 units of O. luteus larvae where it was distributed in three treatments and with three repetitions: 1st) T1 = 299 units, 2nd) T2 = 300 units and 3rd) T3 = 297 units. Three replicate treatments were considered: 1st) larvae fed with newly hatched Artemia salina (Linnaeus, 1758) nauplii / artemia, Brand Mackay Marine, 2nd) Artemia salina + Ceriodaphnia dubia (Richard, 1894), and 3rd) C. dubia + Daphnia pulex (Linnaeus, 1758). When comparing survival in O. luteus according to the experimental treatments of exogenous feeding with live foods, there were statistically significa...