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tetra

– Greek root, four
References in periodicals archive ?
For some characins in the study, that means males are waving pretend ants around in hopes of getting a bite.
Rivulus localities were ranked as having the lowest intensity of predation and Crenicichla localities, which include other predators such as characins, were ranked as having the highest.
Given the complexity of characins, 620 species are included within an Incertae Sedis group, including Astyanax representatives (Lima et al., 2003).
Effects of dietary supplementation of carotenoids on survival, growth, pigmentation, and antioxidant capacity of characins, Hyphessobrycon callistus.
In the present work, we studied the spatio-temporal variation in the feeding habits of two close-related characins: Characidium interruptum (Pellegrin, 1909) and Characidium cf.
Species of large fish such as jaw characins (Salminus brasiliensis), spotted surubim (Pseudoplatystoma corruscans), barred surubim (Pseudoplatystoma fasciatum), streaked prochilod (Prochilodus lineatus), "piraputanga" (Brycon hilarii) and threespot leporinus (Leporinus friderici) are some of the most remarkable Pantanal ichthyofauna (Menezes, 1994).
The question is: those species represent modern lineages of characins? If so, the endemism of Rio Iguacu Astyanax, as with the modern lineages of Characiform fishes, were probably established in this basin earlier than the isolation arising from the formation of the Iguacu waterfalls.