Despite being distributed over a large area on the peninsula, the Spanish toothcarp is largely found in small, threatened areas.

The lifespan of a Spanish toothcarp is short.

In the last two decades, the Spanish toothcarp has suffered a severe decline, due in part to destruction of suitable habitats.

The Spanish toothcarp is an omnivore, and eats insects, crustaceans, worms and algae.

Spanish toothcarp inhabit shallow, slow-moving bodies of water such as river-mouths, coastal lakes, and ponds.

Aphanius iberus (Spanish toothcarp)

The Spanish toothcarp or Iberian killifish, Aphanius iberus, is a small, endemic species of fish in the family Cyprinodontidae.

The biology of the Spanish toothcarp is characterized by a high growth rate, early maturity, a high reproductive rate, multiple periods of egg-laying and a short lifespan.

Various aquatic species exist in the lagoons such as eels, grey mullet, fresh water shrimp and above all the Spanish Toothcarp which is endemic to the Spanish mediterranean region.

The Spanish toothcarp is characteristic of the Iberian peninsula, and extends from the Aigüamolls of Alt Empordà to Lake Agra in Almería.

Between the animal species it is necessary to emphasize some threatened or endangered ones like the peregrine falcon, the Eurasian eagle-owl, the golden eagle and the Bonelli's eagle, the Spur-thighed Tortoise, the Greater Horseshoe Bat and, mainly, the Spanish toothcarp, an endemic fish from south-eastern Spain.

The Spanish toothcarp or Iberian killifish, Aphanius iberus, is a small, endemic species of fish in the family Cyprinodontidae.