1
capitalized
: a genus of dipnoan fishes of the rivers and swamps of central and western Africa that reach a length of six feet, that bury themselves in the mud during the dry season, that are closely related to lepidosirens but have a stouter body and five branchial clefts and differently constructed paired fins, and that are sometimes placed in a separate family but are usually placed in the same family as Lepidosiren
2
plural -es
: any fish of the genus Protopterus
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Merriam-Webster unabridged
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