Astyanax cocibolca

Astyanax cocibolca is a small Central American freshwater fish found primarily in Lake Nicaragua. It was once thought to be endemic to the lake, but its range has since been extended into nearby waterways; still, it is not particularly widespread. It is an omnivorous species that demonstrates a preference for fruit when living close to shore, but specimens living in the open waters of the lake have developed filter-feeding planktivory, which is unusual for members of...