There are some hydrophytes present (Persicaria amphibia, Callitriche stagnalis, Polygonum amphibium and Lemna minor), but their extent has been reduced due to the presence of invasive animal species (carps and Louisiana crawifsh).

[6] When the Prao de la Paúl reservoir was filled, signal crayfish were introduced by the authorities, but this population has probably died off.

The Louisiana crawfish was illegally introduced around 1993, it has been deemed an invasive species due to its uncontrollable growth and damage to the local flora.

Prao de la Paúl is home to the only fish population of the wetlands, consisting of introduced Eurasian carps and goldfish.

The observed reptile species include Psammodromus algirus, the ocellated lizard, the ladder snake and Malpolon monspessulanus.