Superior mouth explained

A superior mouth is a mouth that opens upward, with the lower jaw more anterior than the upper jaw. This is an effect typically seen in fish. This usually means that the fish feeds from the surface of the body of water in which it dwells. A superior mouth is associated with fish in more stationary waters, such as those in lake ecosystems.^[1]

Notes and References

1. Foster . Kimberly . Bower . Luke . Piller . Kyle . Getting in shape: habitat-based morphological divergence for two sympatric fishes: Habitat-based morphological divergence . Biological Journal of the Linnean Society . January 2015 . 114 . 1 . 152–162 . 10.1111/bij.12413 . 83248494 . free .