Description

Hoplisoma brevirostre (Wotroi Catfish)

Species Profile:

If you’re looking for a catfish that combines the “bandit mask” of a Panda Cory with the intricate speckling of a leopard, the Wotroi Catfish (formerly Corydoras brevirostre) is a top-tier candidate. Recently moved to the genus Hoplisoma, this species is often the “hidden gem” in a specialist fish shop’s tanks—frequently mislabelled but always unmistakable once you know what to look for.

Hailing from the blackwater creeks of Suriname and Guyana, the Wotroi is a robust, high-bodied catfish that brings a lot of visual “texture” to the aquarium floor.

Vital Statistics

Spotting the Difference

The Wotroi Catfish is often confused with Hoplisoma melanistius, but there are a few “tells” for the eagle-eyed aquarist:

• The Mask: A sharp, black vertical band runs directly through the eye.

• The Dots: The body is covered in fine, pepper-like spots that are more distinct and “ordered” than on other spotted species.

• The Dorsal Fin: A prominent black blotch sits at the base of the dorsal fin, often extending slightly into the body.

• The Shape: They have a more “compact” and high-backed silhouette compared to the longer, sleeker Rust Catfish.

Core Care & Husbandry

1. The “Wotroi-Proof” Substrate

The Wotroi is an enthusiastic digger. Like the Schwartz’s Catfish, it will spend hours with its nose buried in the substrate.

• The Setup: Soft silica sand is the only way to go.

• The Risk: Using even slightly “blunt” gravel can lead to barbel erosion. Without their whiskers, Wotroi Catfish lose their ability to navigate and find food, which quickly leads to a decline in health.

2. Blackwater Roots

While they are adaptable to standard tap water (provided it is dechlorinated and well-filtered), they truly shine in a “botanical” setup.

• Tannins: Adding dried leaves or bogwood will tint the water slightly. This mimics their natural home and provides the acidic environment that keeps their immune systems strong.

• Lighting: They prefer slightly dimmer conditions. Floating plants are a great way to provide the dappled shade they love.

3. Strength in Numbers

The Wotroi is a social butterfly. In the wild, they are never found alone.

• Recommendation: Keep a minimum of 6. In a group, they display a “follow-the-leader” behaviour that is incredibly entertaining to watch.

Diet and Feeding

The Wotroi Catfish is an omnivore, but it has a high requirement for protein to maintain its stocky build.

• Sinking Wafers: Use a high-quality sinking pellet as the daily staple.

• The “Meaty” Stuff: They go “bonkers” for frozen Bloodworm, Artemia, and White Mosquito Larvae.

• Night Owls: If you have active surface feeders, try feeding your Wotroi just after the lights go out to ensure they get their fair share.

Maintenance with your Superfish Scissors

Tidying the Feeding Ground: Wotroi Catfish are messy eaters; they tend to “flick” sand and debris everywhere. Use your Plant Scissors to trim back any low-hanging moss or “hair grass” that might trap uneaten food. By keeping your carpet plants neatly manicured at 25cm reach, you prevent “pockets” of rot from forming in the areas where your Wotroi like to forage.

Community Compatibility

They are the ultimate “good neighbours.”

• Ideal Mates: Double Red Apistogrammas, Tetras, and other Hoplisoma species.

• Note: Because they are quite “tall” for their length, they are less likely to be bullied by larger tank mates, but they should still only be kept with peaceful companions.

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