yes, but we visited several streams and ponds close to the park which looked like suitable Tesselata habitats,
and from earlier vacations to Croatia I remember the huge numbers of dice snakes in virtually every stream
WHERE, if actually somewhere THERE, that is, "close to the park"? Send me a "private message", if you prefer,
but it doesn't matter, really. You could state that openly as well, no problem.
Of course, if what you mean is just elsewhere in Croatia as a country, that's something else. Yours "in virtually
every stream" might be true for many streams there indeed, but all of them far from the Mediterranean region...
Whichever "streams and ponds close to the park which looked like suitable Tessellata habitats" you tried out,
it was in vain, from the outset...