Como identificar Jacundá

Para identificar Jacundá (Crenicichla lacustris), observe estas características principais.

Características físicas

Formato do corpo

elongated

Coloração

Highly variable. Ground color typically ranges from olive-green to brown or grey, often with irregular dark blotches, bars, or spots along the flanks. A prominent lateral band or series of spots may be present. The operculum often features an ocellated spot (a dark spot surrounded by a lighter ring). Fins can be clear, dusky, or patterned with spots or stripes. Juveniles often display more pronounced patterns than adults. Sexual dimorphism is subtle, with males generally growing larger and sometimes exhibiting more intense coloration during breeding.

Tipo de escama

ctenoid

Posição da boca

terminal

Características distintivas

Elongated, cylindrical body, tapering towards the caudal fin., Large mouth with prominent jaws and sharp, conical teeth, indicative of its predatory nature., A distinct ocellated spot (ocellus) on the caudal fin base is often present, though its prominence varies., A series of dark spots or a lateral band along the flanks., Large eyes positioned dorsally, aiding in ambush predation.

Nadadeira dorsal

Long, continuous dorsal fin with 18-21 spines and 10-13 soft rays. The spiny portion is typically longer than the soft-rayed portion.

Nadadeira caudal

Rounded to truncate caudal fin.

Nadadeira peitoral

Relatively small and rounded pectoral fins.

Nadadeiras características

Anal fin with 3 spines and 7-9 soft rays. Pelvic fins are thoracic.

Dicas de identificação

1. 1

   Body Shape

   Look for the characteristic elongated, 'pike-like' body, which is a hallmark of the Crenicichla genus.

2. 2

   Mouth and Teeth

   Observe the large, upturned mouth with visible, sharp teeth, indicating its predatory feeding strategy.

3. 3

   Caudal Fin Ocellus

   Check for a distinct, often black, ocellated spot (eye-spot) at the base of the caudal fin. While variable, its presence is a strong indicator.

4. 4

   Lateral Markings

   Note the presence and pattern of dark spots, blotches, or a lateral band along the sides of the body. These patterns can vary but are generally present.

5. 5

   Opercular Spot

   An ocellated spot on the operculum (gill cover) is also a common feature in many Crenicichla species, including C. lacustris.

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