Teleosts. Fishes. Vertebrates Animal Kingdom. Fauna. Wildlife. Zoology.

Fish with partial or fully ossified skeleton.
With scales and swim bladder.

Bone or teleost fish, or teleostomes, are the most numerous. Almost all existing fish belong to this class.

Its main feature is to have the skeleton fully ossified.
The gills are covered by a so-called operculum.
The skin is covered with scales arranged with each other like roof tiles.
They have a swim bladder that is located in the anterior part of the intestine, shaped like a sac and filled with a mixture of gases and air that helps them stay effortlessly at the level they want.
They have no spiral valve.
The tail is homogenous, that is, with two equal halves.
The food is very varied. Some feed on algae or plankton others on insects, worms, molluscs, crustaceans, and many feed on other fish.

Bony fish reproduce by eggs and fertilization is usually external.

Bone fish breathing

The fish opens its mouth by absorbing water with the operculum closed. He then closes his mouth and opens the operculum, forcing water to pass through the gills.

Lateral line

They have a sensory organ called lateral line that indicates the movements of water, pressure, touch, smell, etc. It consists of perforated scales under which a channel of sensitive cells is found.

Eye

The eye of bony fish is round and very simple.

Just look good at short distances. To focus it, the lens can move to the retina through a muscle.

fish swimming



Classification of Teleosts

• Acipenseriforms (Sturgeon)
• Cupleiforms. Cupleids (Sardine, herring, salmon, trout)
• Cipriniforms. Cyprinids (Carp, barbel, pike, piranha)
• Cipriniforms. Silurids (Glano, Catfish)
• Anguiliforms. Anguilla (Anguilla, brunette)
• Beloniforms. Belonids (Needle, flying fish)
• Signatiforms. Signatidos (Seahorse)
• Gymnotides (Gymnoto)
• Gadiforms. Gádidos (Hake, cod)
• Perciforms. Serranids (Grouper, sea bass)
• Perciforms. Peridos (Perca)
• Perciforms. Sparrows (Bream)
• Perciforms. Mulids (Mullet)
• Perciforms. Skittles (Tuna, bonito, mackerel)
• Perciforms. Xyphids (Swordfish)
• Perciforms. Góbidos (Gobio)
• Gasterosteiforms. Gasteroseids (Thorny of three thorns)
• Pleuronectiforms. Pleuronectidae (Sole, turbot)
• Hiccups. Idiots. Pediculates (Rape)
• Abyssal



Other information about fauna in Aragón:

A small list of species in Aragon would be the following:

Vertebrates	Invertebrates
Mammals Red squirrel. Bear. Fox. Artiodactyl Ungulates Deer. Wild pig. Birds Classification of Birds Storks. Capercaillies. Reptiles Amphibians Urodelos.    Marbled Triton.    Webbed Triton.    Pyrenean triton. Anurans. Fishes	Metazoans Arthropods Myriapods Insects Arachnids Spiders Crustaceans Annelids Worm Molluscs Asquelmintos Platelmintos Celentereos Porifera Protozoa
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.