4
views
0
recommends
+1 Recommend
0 collections
    0
    shares
      • Record: found
      • Abstract: found
      • Article: not found

      Paedocypris, a new genus of Southeast Asian cyprinid fish with a remarkable sexual dimorphism, comprises the world's smallest vertebrate.

      Proceedings of the Royal Society B: Biological Sciences
      Animals, Asia, Southeastern, Body Size, Cyprinidae, anatomy & histology, classification, physiology, Environment, Feeding Behavior, Female, Male, Sex Characteristics

      Read this article at

      ScienceOpenPublisherPMC
      Bookmark
          There is no author summary for this article yet. Authors can add summaries to their articles on ScienceOpen to make them more accessible to a non-specialist audience.

          Abstract

          Paedocypris is a new genus of paedomorphic cyprinid fish from highly acidic blackwater peat swamps in Southeast Asia. It includes two new species, one of which (Paedocypris progenetica) appears to be the smallest fish and vertebrate known, with the smallest mature female measuring a mere 7.9 mm. Paedocypris has many 'larval' features typically associated with paedomorphic fish (e.g. narrow frontals that leave the brain unprotected dorsally by bone and a precaudal larval-fin-fold), but, uniquely among fishes, males also possess highly modified pelvic fins with hypertrophied muscles and a keratinized pad in front of the pelvic girdle, which, we hypothesize, function together as a clasping or holding device, thereby suggesting an unusual reproductive mode. Unfortunately, habitat destruction jeopardizes the survival of these fishes and thus opportunities for further research.

          Related collections

          Author and article information

          Journal
          16627273
          1560243
          10.1098/rspb.2005.3419

          Chemistry
          Animals,Asia, Southeastern,Body Size,Cyprinidae,anatomy & histology,classification,physiology,Environment,Feeding Behavior,Female,Male,Sex Characteristics

          Comments

          Comment on this article