How to Identify Armored Catfish

To identify Armored Catfish (Hoplosternum littorale), look at these key features.

Physical Characteristics

Body shape

elongated

Coloration

Typically dark brown to black dorsally, fading to a lighter brown or grey ventrally. Some individuals may exhibit a mottled pattern. Fins are generally dusky, sometimes with faint banding.

Scale type

none

Mouth position

subterminal

Distinctive features

Body covered in two rows of overlapping bony plates (scutes) on each side, forming a protective armor., A pair of prominent barbels on the upper jaw and two pairs on the lower jaw., Adipose fin present, often with a spine., Ability to breathe atmospheric air via a modified intestine.

Dorsal fin

Single dorsal fin with a strong, serrated spine and 7-8 soft rays.

Tail fin

Caudal fin is forked, with rounded lobes.

Pectoral fin

Pectoral fins are well-developed, each with a strong, serrated spine and 7-8 soft rays.

Distinctive fins

Adipose fin present, typically small and often with a spine. Pelvic fins are small and located abdominally.

Identification Tips

1. 1

   Body Armor

   Look for the distinctive two rows of bony plates (scutes) running along each side of the body, a hallmark of callichthyid catfishes.

2. 2

   Barbels

   Observe the prominent barbels around the mouth; one pair on the upper jaw and two pairs on the lower jaw are characteristic.

3. 3

   Adipose Fin

   Note the presence of a small adipose fin, often with a spine, located between the dorsal and caudal fins.

4. 4

   Coloration

   Generally dark brown to black dorsally, fading to lighter shades ventrally, sometimes with a mottled appearance.

5. 5

   Fin Spines

   Both the dorsal and pectoral fins possess strong, serrated spines.

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