Sitemaps

What are some typical contaminants of fish2007-11-24 23:41:25

besides mercury.

Answers:

Any of the toxic heavy metals, like mercury are prone to bio-magnification in fish habitats. They do not break down in the environment, and are magnified each time they go up the food chain. Some toxic heavy metals are lead, aluminium, arsenic & cadmium. PCB's get run off into watershed's and can contaminate fish stocks. Although PCB's are more famous for hurting bird populations for making thier egg shells too weak to support the mother birds weight.causing a rapid decrease in population. leading to the outlaw of the use of PCB's

---

i don't know if this is consider contaminants, but i have to say worms (parasites)

---

If they are from Lake Michigan, I'd say feces and body parts.

---

Fin rot

Signs: Fin rot often begins with red streaks in the fins that are soon followed by abnormal lightening of the edge of the fin and then a fraying or rotting of the fin membrane and edges. This infection can lead to a complete rotting of the fin and can spread to the body and lead to death.

Cause: Aeromonas, Pseudomonas, and Flexibacter

Fish tuberculosis

Signs: Fish with tuberculosis usually show a loss of appetite, pale skin color, emaciation, lethargy, skin ulcers, and general poor health. The disease may progress slowly leading to skeletal deformities and eventually death. Post mortem exam will reveal small white nodules in the internal organs.