Microsynodontis laevigata is a species of upside-down catfish endemic to Gabon where it is found in the Ivindo River.

[3] However, when examining previously collected specimens from the lower Guinea region that had been identified as M. batesii, Dr. Ng discovered that the specimens actually consisted of nine distinct species, eight of them previously undescribed.

[4] M. laevigata is a small fish, reaching a maximum standard length of 3.1 centimeters (1.2 in).

[2] The mouth of the fish faces downward, with broad lips containing papilla.

The trailing edge of the caudal fin is straight, instead of forked or rounded.