Como identificar Piau

Para identificar Piau (Leporinus spp.), observe estas características principais.

Características físicas

Formato do corpo

elongated

Coloração

Highly variable among species, ranging from silvery-grey to yellowish or brownish, often with distinct dark spots, bars, or longitudinal stripes. Some species exhibit vibrant red or orange coloration, particularly on fins or ventral regions. Juveniles may have different patterns than adults.

Tipo de escama

cycloid

Posição da boca

subterminal

Características distintivas

Elongated, cylindrical body, Small, protractile mouth, Strong, chisel-like incisor teeth in the front of both jaws, typically 4-6 in the upper jaw and 4 in the lower jaw, used for scraping algae and biting off plant material., Often possess distinct dark spots, bars, or stripes on the body, which are key for species identification., Adipose fin present.

Nadadeira dorsal

Single, relatively short-based dorsal fin, typically with 10-12 rays.

Nadadeira caudal

Forked caudal fin.

Nadadeira peitoral

Paired pectoral fins, typically with 13-17 rays.

Nadadeiras características

Pelvic fins are abdominal. Anal fin is short, typically with 8-12 rays.

Dicas de identificação

1. 1

   Body Pattern

   Pay close attention to the number, size, shape, and arrangement of spots, bars, or stripes on the body. This is often the most reliable visual cue for distinguishing between species.

2. 2

   Mouth and Teeth

   Examine the mouth position and the number and shape of the incisor teeth. While difficult to observe in live specimens, it's a crucial taxonomic feature.

3. 3

   Fin Ray Counts

   Counting the rays in the dorsal, anal, and pectoral fins can help differentiate species, though this often requires careful examination.

4. 4

   Body Proportions

   Relative head length, body depth, and eye size can vary between species.

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