More MTS = Less PS (pond snails) ?

[kj5kb]

I've heard this before, not sure if it is truth or urban fishy legend.

However...

I have noticed a correlation between the amount of Malaysian Trumpet Snails (MTS), vs pond snails (and to some extent ramshorns) in my tanks. I do use the "pick-n-squish" method on readily accessible pond snails, but I wouldn't say I was aggressive about it.

In my 40G Breeder, I have a plethora of MTS, a small population of ramshorns (which may be decreasing), and no pond snails seen anymore :)
Same with my 20H Endler tank and a 10G.

20G long, only 6 months old, reasonable population of MTS, a few ramshorns, no pondies no more. I did take care NOT to intoduce any, but they followed the plants in anyway.

I have a bare bottom 20H with NO MTS, it has a load of ramshorns and is TEEMING with pondies...despite my squish raids. I have another 20H with few MTS; it has a bunch of ramshorns and pond snails...

So, do MTS really eat snail eggs? or maybe the fish are eating the eggs?

????

[stezatois]

didnt work that way in my tank, many mts, many ps, + loaches = fewer of both lol

[vampie]

I've never witnessed any of MTS eating eggs, but they'll outcompete them for food and keep their numbers down.

[Lupin]

Hah! That's what happened to me before. Pond snails boomed, MTS boomed, pond snails declined and since then MTS remained the dominant creatures until I decided to keep some loaches starting with yoyos.