Exploring Armored Catfish in Brazilian Freshwater

The armored catfish is a unique and fascinating species found in the freshwater rivers and streams of Brazil. These catfish are known for their distinctive armor plating on their bodies.

Armored catfish can grow up to 60 cm in length and weigh up to 2 kg. They are an important part of the ecosystem in Brazilian freshwater environments.

In the wild, armored catfish are found in slow-moving waters with rocky or sandy bottoms, where they can forage for food and hide from predators.

Morphological measurements were taken as point-to-point linear distances with a digital caliper to the nearest 0.1 mm following Boeseman (1968).

The researchers used a digital caliper to take precise measurements of the armored catfish. They focused on specimens above 60.0 mm SL to ensure accurate results.

Standard length (SL) is expressed in millimeters, while other measurements are expressed as percentages of standard length or head length (HL).

The team recorded all measurements in specimens above 60.0 mm SL, including the holotype. This ensured that their data was reliable and consistent.

Specimens were preserved in 75% alcohol (alc.) for further study. This method helped to preserve the fish's morphology for accurate analysis.

Additional osteological observations were made from skeletons prepared from formalin-fixed specimens. This allowed the researchers to examine the fish's internal structure in detail.

Vertebral counts include Weberian (five) and ural complexes (one), following Lundberg, Baskin (1969). This specific method ensured accurate counting of the fish's vertebrae.