Red Severum and Similar Species
Heros efasciatus
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Open the appSeveral fish can be confused with Red Severum. Here are the key differences.
Species often confused with {name}
Turquoise Severum
Heros severus
Key differences: Historically, H. severus was often confused with H. efasciatus. Recent taxonomic revisions suggest H. severus is a distinct species, often exhibiting more greenish-blue coloration and a less pronounced dark spot on the flank, or a spot that is more elongated. The 'Turquoise Severum' in the aquarium trade is often H. efasciatus or a hybrid.
Rotkeil Severum
Heros sp. 'Rotkeil'
Key differences: This is a geographical variant or potentially an undescribed species, often characterized by a red 'keil' (wedge) marking on the operculum and a more intense red coloration, particularly in the fins and lower body. It is often considered a distinct population within the Heros complex.
Green Severum
Heros appendiculatus
Key differences: H. appendiculatus typically has a more greenish body coloration, often with a more distinct and larger dark spot on the flank. Its distribution is generally more western in the Amazon basin compared to H. efasciatus.
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