Pond Boss Forums INTRO Questions & Observations How did these fish arrive ?

One means by which birds can introduce undesired, (Or desired for that matter), species is being overlooked. Some water birds that prey on fish, frogs, etc. regurgitate their food or undigestible bits. Just as it is known to be the source of some snail relocation, (Or parasite spread through their feces), it could also serve as a means by which other species get relocated. Again with all bird related theories... chances are slim, but there is a chance.

So it isn't totally unreasonable to assume there is at least some chance of viable eggs or fingerlings making it into a 'new' pond on behalf of our feathered friends/enemies.

But as discussed in previous posts... there is only so many ways adult or slightly sub-adult fish can get there.