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* prior to the capture of fish
Bacteria Diseases
Mycobacterium piscium. Manifested by bumps that look like
tubers, which appear in the spleen, kidneys, liver and skeleton of some fish.
Collogenes bacillus, which causes hemorrhagic exophthalmia.
Virus Diseases
Some other external cause injury induce internal changes.
- Disease limfoquística.apareixen nodules scattered throughout the body. It affects a large number of species, both marine and Aiguadolç.
- Infectious nephritis trout, which is manifested by anemia and liver degeneration
and kidney.
Protozoan diseases - due to diseases
that typically affect Trypanosomas eels and rays .- Diseases caused by Emirias, common sardine and mackerel .- Amebas illness occurring in salmonids.
Diseases metazoans. important. capable of causing zoonotic diseases to
people. The most common are: - tennis. The
Diphyllobotrium latum - Larvae of Anisakis, common in the entrails of some fish in which this might not cause disease, however some people have allergies to these larvae.
Fungal diseases. Sweet
aprolegia s pollution that affects the skin, eyes and gills of carp. In marine species such as mackerel or herring are pollution Ichthyosporidium Hofer. * Alterations after the capture of fish
at the same time the animal is caught
1) biochemical changes: responsible for the appearance of rigor mortis and the partial Micromorphology disintegration of the muscle. thru appear
changes in proteins and lipids.
2) organoleptic changes: changes in color: the oxidation of carotenoids produces skin tones grogueses, red, orange or descoloracions. The color black -> melanin. oxidation in muscle cromoproteïnes -> gray and brown.
softening and loss of elasticity -> activity and endogenous protein in bacteria. estranyesc smells -> volatile substances (trimethylamine, ammonia, hydrogen sulfide)

cold waters: Pseudomonas, Alteromonas, Acinetobacter, Escherichia, Proteus, Serratia warm waters ... g + Micrococcus, and Corinebacterium bacilli. The presence of pathogens is
typical of fish from coastal regions little healthy: E Clostridium botulinum, Salmonella, Shigella and fecal parasites and viruses.

psicròtrofa -5 ° C.
Clostridium botulinum type E. 80 ° C for 20 minutes destroys the spores and a pH below 5.3 inhibited multiplication and toxinogènesi. Vibrio parahaemolyticus (Gastroenteritis.

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