They are not true fish.
They have no lower jaw.
They have no vertebrae or bones of any kind.
They only have a dorsal cord.
Examples:
River lamprey
It has an elongated shape with an almost cylindrical body and compressed tail.
The mouth is shaped like a funnel that acts like a suction cup with which it adheres to the fish.
The mouth has numerous teeth with which it produces wounds for which it sucks the blood of its victims.
He lives almost always in the sea but in the breeding season he emigrates to the rivers.
Mixina
They are marine in anguiliform form.
Parasites live, getting inside the fish through the skin or gills.
It also usually feeds on dead or rotten marine animals.
The mouth has no funnel, like lamprey, and is equipped with two rows of teeth.
Along its body it presents several pairs of mucous sacs.
Other information about fauna in Aragón:
A small list of species in Aragon would be the following:
| Vertebrates | Invertebrates |
|---|---|
MammalsBirdsReptilesAmphibiansFishes |
MetazoansProtozoa |
|
images about the fauna in Aragon. photographs on invertebrates. beneficial animals for agriculture. | |
Auch Aragon genießt eine vielfältige und abwechslungsreiche Natur, in der Pflanzen vorbeigehen, Tiere, Geologie oder Landschaften erreichen wir ein fantastisches Bestiarium, das in seinen Denkmälern lebt.
Die Informationen werden ohne einen Spaziergang durch die drei Provinzen nicht vollständig sein, mit Abschaltungen in einigen seiner spektakulären Landschaften wie Ordesa, der Moncayo, Monegros oder durch Widerspruch den Ebro.
Sie können sich auch den immateriellen widmen: von der Legendenzusammenstellung das gilt auch für das universelle Aragon.