I got up early this morning and rushed over to the lab to suck on tanks — danios lay demersal eggs that sink to the bottom of the tank, and you can just siphon them up — and…nothing but fish poop. I have a sad face. It was probably overly optimistic since we only have a few adults yet and they’ve just been plunked into the system, but I had hopes. They look so happy! (Zebrafish visibly respond to stress by going pale, and as soon as these guys hit the tanks their little stripes were vividly dark blue).
Water quality is good, but now I’m channelling my grandmother and starting to fuss over their diet. They need to eat and get fat and good rich fatty food is just the ticket. We’ve got the brine shrimp hatchery bubbling and those should be ready tomorrow, and I’m going to be giving them a range of tropical fish foods. We will plump these little creatures up so they can give me more than just feces to look at in the morning.
We’ve also ordered a couple of defined wild type lines — at $20/pair, so we expect thoroughbreds — so the colony population should climb soon, which will help. Then, observations and experiments and breeding and colony expansion.