pond management?

Mark Scott

So I have a very healthy private pond that is decent size full of moss, algae, bass, bluegill, crappie, and channel cat.

My questions are:

1) By Taking more of the bigger bass out will this increase the average size of the bass or do they grow to limits set by the size of the pond?


2) On my bass I have noticed little green spots all over that look like little leeches? and in the meat there are yellow deposits of what has the consistency and color of fat or fish eggs. NOTE: this is not in the body cavity it is in the fillet and only on the bass.  Does anyone know what causes this and how to prevent it? 


Thanks - Mark 

Posted by Mark Scott created over 10 years ago - last updated over 10 years ago
2543 views - 8 responses -

My first question is, Is there too many Bass in the Lake?-(Is there a Significant amount of Small Bluegill, reason: as long as there is enough food they should get Big, If you remove some Bass it would allow more food for the others which will allow them to Grow and not be overcrowded, but From what ive heard it is Good to add Minnows every Fall so by spring the Bass will have enough Food..no matter what..

Could be Parasites or tapeworms, or Bass Virus

From Source: What are the signs of Largemouth Bass Virus?

Most bass that carry the LMBV will appear completely normal. In those cases where the virus has triggered disease, however, dying fish will be near the surface and have trouble swimming and remaining upright. That's because LMBV appears to attack the swim bladder, causing bass to lose their capability to maintain buoyancy. Diseased fish might also appear bloated. Adult bass of two pounds and more seem to be the most susceptible to disease. SORES may appear on some fish but are caused by secondary infections of bacteria or fungi.

What are the impacts to fishing?

Following some kills, anglers have reported catching fewer bass, especially bigger fish. But indications are that an infected fishery will recover within a year or two. More largemouth bass are killed annually in the U. S. by other known diseases than by LMBV.


Posted by Kyle Frink over 10 years ago - Report Abuse

Most Likely they are a Parasite called

Trematodes (flukes)
Species in one group of flatworms are often called flukes. Another name for this group is trematode. They are usually short and small, although a few can be seen with the naked eye. You may have noticed small black spots on the outside of fish you were cleaning for your frypan. Or, as you prepared a fillet, you might have noticed yellow worm-like structures embedded in the flesh of the fish. Perhaps you've noticed a fish liver that was covered with small white flecks. These are all stages in the life cycle of different species of flukes or trematodes.
   These are not adult parasites. They are immature forms called larvae.
   They mature to the adult stage when the fish host they inhabit is eaten by some predator, such as a larger fish, fish-eating bird or carnivorous mammal. They do not mature to adult parasites in humans. If you eat these stages (even raw) they won't hurt you.
   The life cycles of the many types (species) of flukes are fairly similar. An adult parasite in a predator animal matures and produces small eggs that pass to the outside of the host. When a microscopic egg reaches a body of water, the small parasite within the egg is either ingested by an aquatic snail or hatches and then finds a snail for a host. One or more additional parasite stages develop within the body of the aquatic snail.
   After the parasites develop, they leave the snail and either penetrate the skin of a fish or are eaten by the fish as they swim through the water.
   When these larval stages infect a small fish, the parasite larvae can survive as long as the fish does. As the fish gets older, it is exposed to more and more parasites which all co-exist in the fish until a predator eats it. This is why larger fish tend to have larger numbers of parasites.
   The "black spot" parasite has the same general life cycle, using snails and fish as intermediate hosts, but after leaving a snail it penetrates the skin and scales of fish and encysts itself in the skin of the fish, appearing as black specks or spots on the fish's skin. When the fish is eaten by a fish-eating bird, such as a kingfisher, the life cycle starts anew.

Yellow Grub
Yellow grub in tail of game fish.

   Another of these parasites is called yellow grub (such as Clinostomum complanatum). You may occasionally see them in the fins or tail of a fish, but you're more likely to encounter the yellowish, worm-like larvae in the flesh of the fish when you fillet your catch. As an adult, the yellow grub lives in the mouth of fish-eating birds, such as great blue herons. The birds pass the eggs through their feces.
   White spot flukes (such as Posthodiplostomum minimum) often encyst themselves in the liver, heart or other internal organs of fish. In some cases more than 50 percent of the liver tissue may be taken over by the parasite.





I read Planting Barley seeds around a Pond/Lake is good for Controlling the Algae Growth on the Water, and there are other Water Treatments such as certain Good Bacteria that would kill any and all Harmful Bacteria in an Lake such as http://www.bioverse.com/product_p/50008.htm ,

Bass Parasite Information: http://www.bassresource.com/fish_biology/fish_parasites.html

Posted by Kyle Frink over 10 years ago - Report Abuse

Mark Scott

Hey Thanks Kyle that second one the "yellow grub" is exactly what it is! I appreciate your knowledge on this subject very much! 



Posted by Mark Scott over 10 years ago - Report Abuse

That was good information Kyle...I am glad that I read this forum. I have seen that "Yellow Grub" thing in the belly of some bass when I fillet them...Good info and good to know..Thanks again...

Posted by Cavie Hawthorne over 10 years ago - Report Abuse

No Problem, Just been Studying it Lately because of  Ponds i Fish at Has so much Algae and Bacteria it seems to be covered in Algae and Moss and ive Left it alone because of it. and snags.

Posted by Kyle Frink over 10 years ago - Report Abuse

My Neighbor added several fresh water carp to eat the Algea, don't know how that would effect other fish as preditors of Bass. Their pond has Breem and the water stays clean.

Also you might notice every year a fresh pond or lake will , what is called Turn over, from depletion of Oxy. from the growth of algea etc. that is why folks add paddles or pumps to add oxy. into the water .Even here in the Ozarks they added some new ways to offset oxy. depletion in the local  Rivers with a constant release of water flow from the Lake Dams. Interesting post on the Great Blue Heron depositing eggs and larvea to produce worms, we have Herons here . Thanks for this post.

Posted by Aj Shapiro over 10 years ago - Report Abuse

You might want to add some snails and crayfish to balance out the eco system. And ditto on adding minnows/baitfish.

Posted by Hank S over 10 years ago - Report Abuse

Henry V

This is all informative stuff. My local fishing club received a call from a family that asked us to check out their three ponds. They had three small interconnected ponds. One of them had a good bass population, including some big fish. The second one had more bass, but they were smaller. The third one had only small bass.

The difference was the bluegill population. The pond with the fewest and smallest bass had tons of bluegills in it.

The pond with the high numbers of small bass had lots of bluegills, too, but not as many. It also had some catfish and carp.

The best pond had the perfect balance:  a small but healthy population of bluegills, bass ranging from small to large sizes, and a snapping turtle that was keeping veeryone in place. It also had more snaills, minnows and a pocket of lily pads. It was fairly obvious that the right balance made the difference. It also affected the water quality.



Posted by Henry V Elite Member over 10 years ago - Report Abuse

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