Miniaturization in Otothyris Myers, 1927 (Loricariidae: Hypoptopomatinae)

This dataset contains the digitized treatments in Plazi based on the original journal article Rosa, Alaina Cristine, Martins, Fernanda de Oliveira, Langeani, Francisco (2014): Miniaturization in Otothyris Myers, 1927 (Loricariidae: Hypoptopomatinae). Neotropical Ichthyology 12 (1): 53-60, DOI: 10.1590/S1679-62252014000100005, URL: scielo.br/scielo.php?script=sci_arttext&pid=S1679-62252014000100053&lng=en&tlng=en Many species of freshwater fishes are considered miniatures, nevertheless, their identification as miniatures is frequently based only on an arbitrary criterion of small body size.

Although some species of Otothyris had been suggested to be miniature, informations about the process and consequences of miniaturization in the genus are lacking. Here, we detail developmental events of loss, fusion, and modifications in several bones, the laterosensory system, and even the brain, that in sum demonstrate miniaturization in all species of the genus. Our results may be useful in the recognition of other miniature species of loricariids.