Catching Rainbows with skin disease?

[Guitarplayingfish]

So I was at a friends cabin not too long ago.. We were catching trout, and I have been catching trout there for years... It is a stocked lake. Maybe 1 out of 20 had a disfigurement... But this last time I went out, I caught tons of trout, and every single one had what seemed to be bubbles in their skin. Every single one... Is this a mistake from a hatchery or ??? What could cause every single fish to have this??

[great white whaler]

sounds like ick,parasite spreads ,,samething going on at obed lake with the browns ..it doznt hurt the meat tho, still taste good:sign0068:

[duffy4]

What lake were you fishing at? Contact the Fisheries people responsible for that area and I am sure they will be interested in looking into the situation.

[BBJTKLE&FISHINGADVENTURES]

Not sure where your from but Id be giving a call to you local SRD Fish biologist in the area of the lake . Use this Link zoom it in to about 75 % and all the contacts are there . Not sure how recent it is , but used this in my latest letter I sent . The first link is the best of the 3

http://www.srd.alberta.ca/AboutUs/SRDContacts/FishWildlifeOfficeContacts.aspx

http://www.srd.alberta.ca/AboutUs/SRDContacts/documents/SRDContacts-FisheriesManageAreaContacts-Apr2010.pdf

http://www.srd.alberta.ca/AboutUs/SRDContacts/documents/SRDContacts-WildlifeManagementAreaContacts-June2010.pdf

Hope this helps .

[Guitarplayingfish]

Well, I e-mailed and this is what I got.

There was a similar outbreak in the lake last summer. Fish were sent to our Fish Disease Specialist in Edmonton at that time. She believes the blisters are caused by a parasitic flatworm (black spot disease). The flatworm is called a digenian trematode. The parasite is not infectious to people. Although unsightly, fillets are safe to eat if well cooked. That said, due to naturally occurring bacteria, eating any undercooked fish can cause diarrhoea, abdominal pain, chills, and headache. Due to the potential for higher levels of naturally occurring bacteria in fish with the parasite, it would be prudent to release any trout caught that have skin ulcers or lesions. Similar outbreaks have occurred in the past, and there is nothing immediate that can be done to control it. We plan on letting it run its course and eventually it will go away.

[LeonH]

I was told once that it has to do with low oxygen levels that exists late in summer due to warm water. This is also what my friend was told by a park ranger recently as well.