
Source: Wikimedia Commons
Hoplisoma adolfoi
A small corydoras in three colours: a white body, a black mask over the eye, a dark oblique bar across the back and an orange patch on the nape. It comes from the soft, acidic Rio Negro.
Hoplisoma adolfoi is a small callichthyid catfish from the Rio Negro basin in Brazil, moved out of Corydoras adolfoi in the 2024 generic revision. FishBase records 5.7cm standard length and Seriously Fish gives 55-60mm. It shows three colours: a white body, a black mask over the eye, a dark oblique bar across the back and an orange patch on the nape. Several Rio Negro congeners carry a similar oblique bar, and this species is most easily confused with Hoplisoma duplicareum. The bar is said to be narrower and the nape patch less intense here, but Seriously Fish states that these characters cannot separate the two reliably. Aquarium conditions are 20-26C, pH 4.0-7.0 and 1-5dGH, so soft, acidic water is needed. It is peaceful and strongly gregarious and should be kept in groups of at least four to six. The IUCN Red List assesses it as Least Concern.
Source: Wikipedia (CC BY-SA 4.0)
The Adolfo's Corydoras lives 5-8 years.
The Adolfo's Corydoras grows to 5.5-6cm.
The ideal temperature for the Adolfo's Corydoras is 20〜26℃.
Origin
South America (Rio Negro basin)
Lifespan
5-8 years
Sources: FishBase / Seriously Fish
Edited & verified by: BreederDirect editorial team
The taxonomic, regulatory, and husbandry data on this page are compiled and verified against the authoritative primary sources below.
Accepted name: Hoplisoma adolfoi (Burgess, 1982)
Synonyms: Corydoras adolfoi
Authority databases: FishBase
Nomenclature follows global taxonomic authority databases.
Sources: CITES Appendices (species not listed) / IUCN Red List
Regulations may change. Always verify the latest information with the relevant authorities.
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Size
5.5-6cm
Temperature
20〜26℃
Sinking dried foods, frozen bloodworm, Tubifex
Use fine rounded sand with wood and leaf litter for cover, and never block access to the water surface.
20-26C, pH 4.0-7.0, 1-5dGH; soft, acidic water is preferred. FishBase records 22-26C, pH 6.0-8.0 and 2-25dH in the wild.
Peaceful and gregarious; keep at least four to six. Pair it with fishes of similar water requirements, such as soft-water characins.
A foraging omnivore. Offer sinking dried food plus frozen bloodworm and Tubifex. It must never be expected to live on leftovers or to clean the tank.
Use two males per female. Once females are gravid, make a 50-70 percent water change with cooler water and raise oxygenation and flow. Eggs are laid on glass, fine-leaved plants or spawning mops.
Assessed Least Concern by the IUCN Red List. It closely resembles Hoplisoma duplicareum, so a shop label alone may not identify which species you have.
Intermediate. This is an intermediate-level species. Some prior experience and knowledge of environmental management are recommended.
The ideal temperature for Adolfo's Corydoras is 20〜26℃. Avoid sudden temperature changes and maintain a stable environment.
The average lifespan of Adolfo's Corydoras is 5-8 years. With proper care and nutrition, they can live a long and healthy life.
Adolfo's Corydoras typically reaches 5.5-6cm as an adult. Size may vary depending on care conditions and individual genetics.
Adolfo's Corydoras feeds on: Sinking dried foods, frozen bloodworm, Tubifex. Aim for a balanced diet with appropriate feeding frequency.
The price of Adolfo's Corydoras varies significantly depending on morph, size, and lineage. Check our market price page for the latest pricing information.
Last updated: September 17, 2026