How to Identify Crenuchoides Hasemania

To identify Crenuchoides Hasemania (Hasemania crenuchoides), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

The body is generally silvery to golden-brown, often with a distinct dark lateral stripe extending from the operculum to the caudal peduncle. Males tend to exhibit more intense coloration, especially during breeding, with reddish or orange hues on the fins and body. The fins are typically hyaline (clear) but can show hints of yellow or red.

Scale type

cycloid

Mouth position

terminal

Distinctive features

Absence of an adipose fin, Dark lateral stripe, Sexual dimorphism in coloration (males more vibrant)

Dorsal fin

Single, relatively short, with 2 unbranched and 8 branched rays.

Tail fin

Forked, with symmetrical lobes.

Pectoral fin

Small, typically with 1 unbranched and 10-11 branched rays.

Distinctive fins

Pelvic fins are small, typically with 1 unbranched and 7 branched rays. Anal fin is moderately long, with 2 unbranched and 15-18 branched rays.

Identification Tips

1. 1

   Adipose Fin

   The most definitive characteristic is the complete absence of an adipose fin, which is present in many other characin species.

2. 2

   Lateral Stripe

   Look for a prominent dark lateral stripe running along the flank, which can vary in intensity.

3. 3

   Body Shape and Size

   A relatively small and slender characin, typically reaching a maximum standard length of about 4-5 cm (1.6-2 inches).

4. 4

   Fin Coloration

   Males often display reddish or orange tints on their fins, particularly the caudal and anal fins, which can be a good indicator of sex and species.

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