Guests - If You want access to member only forums on FM. You will gain access only when you Sign-in or Sign-Up on Fishing Minnesota.

It's easy - LOOK UPPER right menu.

Sign in to follow this  
Followers 0
joeyquicksand*

what are those black spots on fish

11 posts in this topic

I've noticed some parasite that is uglying up all the northerns on my folks lake up north. What the heck is that, and if i eat northern pike sushi will i get black spots? ONLY KIDDING! but what the heck is it?????

Share this post


Link to post
Share on other sites

worms

Share this post


Link to post
Share on other sites

I dont know but I have been seeing them everywhere frown.gif

Share this post


Link to post
Share on other sites

i used to see them on sunnies and crappies from sunrise lake in linstrom but was told not to worry as long as the meat looked good.besides if you cook it,it should kill it smirk.gif

Share this post


Link to post
Share on other sites

umm..... they are worms

Share this post


Link to post
Share on other sites

Black spots

Black spot disease is commonly observed in rock bass and other sunfish, bass, pike, perch, minnows, and other fish species. It can be identified by the presence of small black spots, usually about the size of a pin head, in the skin, the fins, the musculature, and the mouth of the fish. The black spots are caused by pigment that the fish deposits around the larval stage of a parasitic digenetic trematode, usually a Neascus spp.

The lifecycle of the "black spot" parasite is complex. The adult parasite is found in a fish eating bird, the kingfisher. The larval parasite is transferred from the infected fish to the bird during the feeding process. In the kingfisher, the larval stage develops into an adult parasite. The adult parasite in the intestine of the bird produces eggs that are eventually deposited in the water. There the eggs mature, hatch, and develop into the miracidium stage of the parasite. The miracidium infects a snail. In the snail, the miracidium develops into the cercaria life stage. The cercaria leaves the snail and actively penetrates a host fish. In the fish, the parasite becomes encysted. In about 22 days, black spots form around the cyst. This entire lifecycle takes at least 112 days to complete.

In general, the presence of the "black spot" parasite does not affect the growth or the longevity of the infected fish; however massive infections in young fish may cause fish mortality. The parasite is incapable of infecting humans and, as is the case with all fish parasites, it is destroyed by thorough cooking. When fish are heavily infected, some anglers prefer to remove the skin to improve the appearance of the cooked fish.

From an online source..

Share this post


Link to post
Share on other sites

When you are cooking them up if anyone asks what all the black spots are, tell them it's pepper.

Share this post


Link to post
Share on other sites
smile.gif They aren't 'worms' and not harmful at all! Just fillet the fish!

Share this post


Link to post
Share on other sites

Sorry I had my parasites mixed up........Dr. Mcfishy grin.gif Worms, bugs, parasites, whats the difference??? I never said anything about eating them.... I have eaten fish with these spots many times and I'm still some what normal tongue.gif Peace out cub scout.......

Share this post


Link to post
Share on other sites

I won't eat a fish with black spots on. Even though it is somewhat consider safe if fully cook the DNR still says to use precaution. It's not known to affect human but they dont say it with assurance. Somehow there is no know treatment? Why? I don't know, but I would really like to see a solution.

The infection can be meat deep and the sunfish are mostly affected, I guess maybe due to the fact that the parasites swim or occupy shallow waters. I occasionally see it on Bass & Walleye or larger gamefish too. I hardly see the spots on Crappies if not at all.

About 70% of the lakes/ponds I fish in I see these parasites on fish so its a problem because I think it makes fish uneatable when heavily infested. You think they had some sort of solution by now.

Share this post


Link to post
Share on other sites

Freckles?

Share this post


Link to post
Share on other sites
Guest
This topic is now closed to further replies.
Sign in to follow this  
Followers 0



  • Posts

    • AlwaysFishing23
        Me! Also agree with leech a lot of those kind of seats are on sale quite often at FF.
    • leech~~
      Not sure how much money you want to throw into them but like someone else said. The boat seats at Fleet Farm aren't bad and come in a lot of different colors to match boat colors. Their pretty comfy as well. I have used a bunch of them when rebuilding golf carts instead of spending a lot on new cart seats. This time of year they go on sale as well.
    • smurfy
      looking to head that way the weekend of april 8th. one of the projects i have in mind kinda requires no snow in the woods..........any reports of snow out in the woods?????????
    • AaronTC05
      Thanks slowpoke.  I just looked at them again and they're in really good shape actually, it's just that the back boards where the screws attach are weak and some of the screws don't stay in on a couple of them.   Does anyone know of somewhere in the metro (preferably south) that would repair them.  Would a Marine place like Dan's Southside or Valley Motor sports do something like that?    
    • Chill62
      As most people know there has been some recent incidents out on the ice with people falling through.  Monday two gentlemen fell through on wheelers on HOL.  One of the gentlemen is Dave Genz's brother and since they have a cabin up there I'm sure he has been on the lake more then one time.  Then on Tuesday someone fell through down by Dent on one of the Silent Lakes.  A buddy of mine was on a lake by Frazee yesterday afternoon and even though there was 12" of ice he was able to get through the ice with one hit of his spud bar.  Everyone PLEASE PLEASE be careful out there.  This ice is getting eaten up quickly!  I lost a class mate of mine when he fell through the ice trying to rescue his dog so please just take the time and stay safe.  Don't forget your rope, Spud Bar, and a life jacket if you MUST scratch that last itch!