That's cool to see that there are undiscovered populations of mudfish around, such weird looking little things.
Found a good sized bed of Kakahi a few months, with lots of them sub 50mm. This was from a lake where the only natives are bullies and eel (no koaro that I know of), there are trout, rudd and catfish. I'm wondering if catfish make a good host as I have seen another population of freshwater mussel in another lake that has a high catfish population?