Are these the same tylo species?

[psyche]

As my two little towutica tylos grew they started to look quite different in terms of yellow coverage. I was wondering if this is just natural variation or they might actually be different species?

[boxedfish]

the first pic is a yellow spotted and the second one should either be a yellow or golden. Both are sulawesi snail species.

[Yadokari]

1st one is indeed the spotted one. The second is golden. Yellows have a paler looking yellow and their shell isn't black.

Two different types of tylos.

[psyche]

Their shells look essentially identical. I guess I will follow up with the vendor and see what they say. I am glad you agree that they don't seem to be the same species!

[boxedfish]

same species might have different shell design. Oh and do you know that tylo snails can be found at different parts of indonesia, not only limited to sulawesi lakes. Some could be from java which is more easily available due to better accessibility. So they could be the same species but with different shells. I had 4 tiara rabbit snails, 1 of them has a different shell design from the rest.

[Lex.inverts]

The first one looks like T. towutensis (Gold-Spotted Rabbit snail) and the second looks like the Black-shell variant of the Yellow Tylomelania from lake Poso. Goldens (or mini-yellows as they are being sold in the U.S.) have a short and fat shell, only get to be 1 inch as adults, and usually have a darker yellow coloring. There are two different species of large (2.5-3 inches) Yellow tylos currently being traded--one with a jet-black shell and one with a lighter brown shell (the new shell growth is especially light).

[Death Pony]

Yellow spotted and yellow.

[Wycco]

Two of my yellows have very dark green shells (almost black) and two have dark brown shells. Body colouration looks identical.

My snails were "siblings" raised by the same vendor so presumedly the same species. I imagine as with all snails different genetics or physical exposure could lead to different phenotypes.