Fish with cartilaginous skeleton.
Skin covered by dermal denticles.
They have no swim bladder.
Elasmobranchs or condrugs are very archaic fish, with cartilaginous skeleton.
The mouth, in sharks or sharks, is provided with a powerful denture armed with several rows of teeth, which are replaced.
They have highly developed olfactory lobes. Straight tail (two uneven halves).
Internal fertilization; the male has a couple of coupling organs.
They are generally predators and scavengers.
Elasmobranchs generally have five pairs of eyelet-shaped gills, open to the outside. The lack of opercles that control the entry and exit of water forces these fish to remain in constant motion to force water to penetrate the gills.
The skin is covered with dermal denticles. They have a sensitive organ along the body called the lateral line that allows them to perceive the vibrations of the water and even the taste of their prey.
They have a spiral valve inside the intestine that considerably increases their absorption surface.
There are two types of seláceos: the sharks or pleurotrems or sharks and the batoideos or hypotremas or rays.
The sharks have a fusiform body and pointed snout, highly developed fins with which they can travel at high speed. This group includes sharks, which have powerful teeth. They are very voracious predators, mostly carnivorous and some dangerous for swimmers.
Rays have a flattened or diamond-shaped body or disk. The mouth, nostrils and gill slits are found in the ventral face. The tail of the majority is shaped like a whip and they swim by the wave movement of the pectoral fins. They usually live at quite a depth. Some, like the torpedo, have electrical organs.
Rays are stripes, torpedoes, blankets, sea eagles. etc.
Blanket fish.
The sea devil or blanket is oversized and jumps out of the water.
The torpedo, tremielga or scrapie has electric organs on both sides of the head capable of producing discharges of up to 200 volts.
The holocéfalos are elasmobranquios fish of very elongated body with numerous spines, some of them with venomous glands, dangerous for the swimmers, since they are very aggressive.
They have a big head with big eyes and a small mouth, whose teeth are fused into dental plates, which form like a parrot's beak.
They have no spiracle.
The seminal liquid is carried in the form of packages.
The most typical is the chimera.
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. |
Also Aragon enjoys a diverse and varied Nature where passing by plants, animals, Geology, or landscapes we can arrive at a fantastic bestiary that lives in its monuments.
The information will not be complete without a stroll by its three provinces, with shutdown in some of its spectacular landscapes like Ordesa, the Moncayo, Monegros or by opposition the Ebro.
Also you can dedicarte to the intangible ones: from the legend compilation that also does to universal Aragon.
Fauna |
Flora |
Geology |
Fungi |
Water
Landscapes |
Monegros |
Moncayo |
Ebro |
Ordesa
Bestiary |
Books |
Buffon |
Activities |
Culturales |
Zh2o |
Photografies
Document |
Nature in Aragon
The pasapues project is an extension of the Aragón project is like that, and tries to collect and relate all possible types of documentary information about Aragon: texts, books, articles, maps, illustrations, photographs, narrations, etc., and proceed to its publication and diffusion.
Elasmobranchs. Fishes. Vertebrates Animal Kingdom. Wildlife. Fauna. Zoology. Reproduction, physiology, protozoa, metazoa, celenterates, celentereos, spongiaries, celomados, procordadas, vertebrates, fishecology, zoogeography, Water, humidity, wetlands, sea, river, food, gastronomy
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