The study was carried out in the facilities of the Research Institute of the Peruvian Amazon (IIAP), located at km 4.5 of the Iquitos - Nauta highway, province of Maynas, department of Loreto. The optimal density of larval breeding of Sabalo cola roja Brycon amazonicus was determined, through three densities evaluating growth and survival, which were cultivated in glass tanks for 15 days. 3 treatments with three repetitions were used, having a total of 9 experimental units at densities of 5 larvae/L (T1), 10 larvae/L (T2) and 15 larvae/L (T3). The larvae were placed in fish tanks of 30x30x40 cm, a total of 1800 larvae were planted with initial weight and initial average length of 0.1g and 0.7cm. They were fed ad libitum with artemia nauplii as the only food, with four feeding frequencies per day (at 8, 11, 14 and 17 hours). The data obtained during the experimental period in weight and h...

The study focuses on the Huachana lake, a vulnerable ecosystem in the Peruvian Amazon region that receives wastewater from the city of Iquitos. Despite its significance in ichthyology and its role as a type locality for various species, water bodies near Iquitos face threats. While a portion of the ichthyological diversity in the Loreto region is known, the Huachana lake had never been subject to sampling, making this study the first to examine fish diversity in this aquatic environment. A total of 52 fish species from 5 orders, 20 families, and 39 genera were identified. The Characiformes present the greatest species richness (30 species), followed by Cichliformes (12 species). Cichlidae and Characidae are the families richest in species. No species are endangered according to the IUCN; the majority are considered of least concern. The study also identified ornamental and commercial spe...

The study focuses on the Huachana lake, a vulnerable ecosystem in the Peruvian Amazon region that receives wastewater from the city of Iquitos. Despite its significance in ichthyology and its role as a type locality for various species, water bodies near Iquitos face threats. While a portion of the ichthyological diversity in the Loreto region is known, the Huachana lake had never been subject to sampling, making this study the first to examine fish diversity in this aquatic environment. A total of 52 fish species from 5 orders, 20 families, and 39 genera were identified. The Characiformes present the greatest species richness (30 species), followed by Cichliformes (12 species). Cichlidae and Characidae are the families richest in species. No species are endangered according to the IUCN; the majority are considered of least concern. The study also identified ornamental and commercial spe...