I just got 10 chili rasboras for my new 6 gal planted tank yesterday. I ordered them online, and honestly expected to lose 1 or 2, but everyone seems happy and healthy so far.
Before the fish came in, I had tons of worms (at least 3 different types) plus some little spherical things/specks that were all on the glass, driftwood, and substrate. And I mean a LOT. You could easily see them without trying too hard.
The fish feasted on all of them immediately after being introduced yesterday morning, and within about 6-8 hours, the tank was looking impressively clean.
This morning they are hunting on the glass still a lot, but also on the driftwood, substrate, and even right off the surface. It's mostly the little specks left, but if I look closely I can usually spot a worm or two on the driftwood.
My question: is it possible to sustain these chili rasboras with just the living critters? I'm worried they'll just eat them all up too quickly and then be mostly hungry. If yes, how do I know they are getting enough to eat? What bahaviors or signs could indicate that they are well fed or underfed? The place I ordered from (http://wetspottropicalfish.com
) stated they were "wild" for whatever that's worth.
I'm trying to get this tank to be as self-sustaining as possible, so I don't want to add in food if I don't have to.
Here's a video of a medley of the critters hiding out in the substrate (and maybe also some eggs?? - I have two Malaysian trumpet snails). Gross, but hopefully good nutrition? Hopefully, none of these are harmful to the aquarium. https://youtu.be/ftmnB5h0QGc
Here's a video of one hunting last night after the easy pickings were pretty much cleaned off the glass: https://youtu.be/Tqfb7i76Teg
The tank has been going for just over 6 weeks. I added the 5 snowball shrimp/ and 3 snails last week. I've got java moss, hydrocotyle Japan, vallisneria, frogbit, dwarf hairgrass, bacopa caroliniana, and stream bogmoss planted. A lot of them died back after planting, so I did have a lot of dead plant matter. I trimmed them back a lot and cleaned before adding livestock so it's mostly new growth now, and I hope they fill in a lot more over time. No filter, just a heater and lights, Walstad style.