Am I over stocked?

[Konyaa]

We have a 90 litre tank that's about 3 years established. It is beautiful and crystal clear with no health algae or smell issues.

My question is, is it overstocked?

We currently have -

PLANTS - Anubias Nana, Amazon Sword, Java Fern on Bogwood, Java Moss on rock, Elodea - they plants are all clumps of 3/4 plants and a large part of the tank looks like a forest.

OBJECTS - A huge shipwreck, a Chinese castle, a canoe, a stone castle - most of this is in the less foresty area

FISH -

2 Endler Guppies
2 Male Guppies
5 tetras
3 cherry barbs
2 mollies
2 dwarf guaramis
1 massive pleco that's adult size and sucks the walls at night
1zebra snail

Too many in there? The fish have tons of space to hide and therefore don't hide much.

.

If you didn't have the pleco you'd be perfectly stocked. (Rough estimate as I don't know what tetras they are)

However depending on the type of pleco you could potentially be massively over stocked, if it's a bristle nose you're only overstocked by probably about 10cm, if it's a "regular" pleco potentially you're overstocked by about 30cm.

Thanks. So wondering what should i do. Nobody's ill. Tank is fine, fish are happy,haven't yet had any issues.

Should I try to re home pleco anyway?.