Results for “interradial”
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Betta foerschi
Vierke, 1979
Max length50mm SL2.0in SLTank60 × 30cm24 × 12inTemp22–28°C72–82°FpH4.0–6.0This species lends its name to the Betta foerschi group of closely-related species within the genus, of which members share the following set of characters: possession of iridescent blue or green unpaired fins; rays and interradial membranes in unpaired fins not contrasting; dorsal fin with thin, bright white distal band; opercle with two, reddish-yellow, vertical bars. Members are regarded as being closely-related to bubble nesting Betta specie...
Betta imbellisCrescent Betta
Ladiges, 1975
Max length60mm SL2.4in SLTank45 × 30cm18 × 12inTemp20–28°C68–82°FpH5.0–7.5B. imbellis is included in the Betta splendens complex of closely-related species within the genus, of which members share the following set of characters: head length short 22-31 % SL; often a brightly-coloured body; iris of the eye with iridescent green or blue patches; body elongate or slender; opercles parallel when head viewed dorsally; caudal-fin rays red or brown and contrasting with the iridescent interradial membranes; unpaired fins without an irides...
Betta mandor
Tan & Ng, 2006
Max length60mm SL2.4in SLTank60 × 30cm24 × 12inTemp22–27°C72–81°FpH4.0–6.5This species was known as B. sp. 'Mandor' or B. sp. 'ninja' prior to official description. It belongs to the Betta foerschi group/complex of closely-related species within the genus, of which members share the following set of characters: possession of iridescent blue or green unpaired fins; rays and interradial membranes in unpaired fins not contrasting; dorsal fin with thin, bright white distal band; opercle with two, reddish-yellow, vertical bars. Members are regarded as being closely-related to bubble-nesting Betta species since they share exhibit certain similarities in morp...
Betta smaragdinaEmerald Betta
Ladiges, 1972
Max length60mm SL2.4in SLTank45 × 30cm18 × 12inTemp22–28°C72–82°FpH5.5–7.5This species is included in the Betta splendens complex of closely-related species within the genus, of which members share the following set of characters: head length short 22-31 % SL; often a brightly-coloured body; iris of the eye with iridescent green or blue patches; body elongate or slender; opercles parallel when head viewed dorsally; caudal-fin rays red or brown and contrasting with the iridescent interradial membranes; unpaired fins without an iridescent margin; opercle with red or blue vertical bars in males; dorsal-fin rays 0-II, 7-9; anal-fin rays II-V, 21-26.