Results for “rudimentary”

This species is available in the trade on occasion and has been sold as Danionella sp. 'neon green' or 'flourescent green'. The specific name was inspired by its jaw morphology which according to current knowledge is unique among cypriniform fishes. Both upper and lower jaws contain a series of toothlike odontoid processes; these are only rudimentary in females but in males appear to form rows of teeth of which the front pair is large and fang-like. The upper fangs project th...

This species is sometimes referred to as 'Hora danio' or Salween danio'. It is distinguished from similar-looking species by a combination of characters as follows: lateral line complete or incomplete with 22-33 pored scales; absence of infraorbital process; 7 branched dorsal-fin rays; usually 10 or 11 branched anal-fin rays; barbels absent or rudimentary; flank markings comprising a series of narrow vertical bars on the anterior portion of each flank, fol...

This species can be distinguished from congeners by the following combination of characters: body depth fits 2.5-2.7 times in SL; 28-31 +2-3 lateral line scales; 14-16 circumpeduncular scale rows; 5-5½ scale rows between the lateral line and dorsal-fin origin; a triangular distal blotch on the dorsal-fin; a few body scales with crescent-shaped black edges; a thin dark margin on the dorsal-fin, posterior to the distal blotch; a dark posterior margin on the caudal-fin; normally a single pair of rudimentary barbels present.