How does velvet infect in a qt system?

[WilliamH2529]

Hello all I have more of a scientific question of interest, so based upon what I’ve seen from the velvet life cycle it needs a sand or substrate to infect a fish yeah? but it also is found in fish via well it being carried by them so here’s my question, say two fish are in a bare qt system can one fish who’s infected with velvet infect another fish even though the velvet can’t really go through the normal life cycle used for infection?

 

[Rtaylor]

You’ve been misinformed on the lifecycle of velvet dinospores, here’s a good reference:
https://humble.fish/community/index.php?threads/marine-velvet-disease.12/