The site has a significant importance regarding the entomofauna of the dunes, extremely rare for the Maltese islands. Among the plants of Elytrigia juncea and Euphorbia terracina, Leptochilus medamae, Pseudopipona tripunctata, Dasylabris maura, Smicromyrme n.sp., Tachygetes n.sp., Prionyx viduatus, Exohus australis and Mesostenus hellenicus, find shelter. In particular, the presence of a small population of Brachytrupes megacephalus is reported. The wetland is a fundamental ecosystem for a population of Aphanius fasciatus and provides shelter for many species of migratory birds. For example, Charadrius dubius couples have choose the gravel beaches created in the Ghadira Nature Reserve as breeding site. But the most important aspect of the garrigue is the herpetofauna, which includes numerous species of Annex II of the Habitat Directive (Podarics filfolensis maltensis, Tarentola mauritanica, Hemidactylus turcicus turcicus, Chalcides ocellatus, Chamaeleo chamaeleon, Telescopus fallax fallax, Coluber viridiflavus carbonarius and Elaphe situla). Finally, the garrigue areas provide the ideal site for many species of birds and especially is a breeding site for Calandrella brachydactyla. In the area, as in the Agro Pontino, there are numerous species of micromammals (Suncus etruscus) and present bats (Pipistrellus pipistrellus, Pipistrellus kuhlii, Pipistrellus pygmaeus, Plecotus austriacus, Tadarida kenioti, Eptesicus serotinus) and among these is reported the presence also of Myotis blythii, species of Annex II.
The site has a significant importance as a breeding site for different species of amphibians and is regularly used as a nesting and feeding area by numerous species of birds, both relating to the agricultural environments and the mosaics (Anthus pratensis, Alauda arvensis, Buteo buteo, Calandrella brachydactyla, Carduelis chloris, Cisticola juncidis, Falco tinnunclus, Saxicola torquata), that relating to the presence of lakes and watercourses (Alcedo atthis, Ardea purpurea, Ardea ralloides, Cettia cetti, Egretta garzetta, Gallinula chloropus). Furthermore, the site performs an important stop-over function for species that use the watercourse as a preferential area of movement and which occasionally frequent the surrounding agricultural areas in trophic activity. Among these is reported the presence of raptors (Circus aeruginosus, Circus pygargus, Pandion haliaetus), testifying the good ecological value of the territory and the presence of a discretely structured fauna community.