Severum and Similar Species
Heros severus
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Open the appSeveral fish can be confused with Severum. Here are the key differences.
Species often confused with {name}
Green Severum
Heros efasciatus
Key differences: Historically, H. efasciatus was considered a synonym of H. severus. However, recent taxonomic revisions (Kullander, 2003; Stawikowski & Werner, 2004) have recognized H. efasciatus as a distinct species, often characterized by a more greenish body coloration and a less pronounced red shoulder compared to some H. severus forms. The distinction can be subtle and often requires examination of meristic counts and geographic origin.
Pearl Severum
Heros sp. 'Pearl'
Key differences: This is a common name for a captive-bred color morph, not a distinct wild species. It typically refers to H. efasciatus or H. severus individuals with iridescent, pearlescent scales and often a lighter body color. Differentiating from other H. severus or H. efasciatus forms relies on the specific iridescent sheen.
Rotkeil Severum
Heros severus 'Rotkeil'
Key differences: This is a specific color morph of Heros severus, characterized by a prominent red or orange coloration on the operculum and anterior body, often extending into the dorsal fin. It is not a separate species but a selectively bred variant within H. severus.
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