I have three otos in my fish tank. It is a new tank, fully cycled and the otos and two male platies were the first fish I introduced five days ago.
The tank was heavily covered with brown algae and the otos have been feeding off it ever since I got them. They have been doing surprisingly well, given how fragile they can be to keep. They've been eating almost all of the time, stopping to rest for a few seconds only, they've been playing with each other and with the air pump
However, today I noticed they started to swim all over the tank in a frenzied manner as if searching for food. They are literally going crazy, moving as a school most of time, going up and down the walls of the tank, sniffing for something to suck onto. There is still some algae in the tank but I guess it is not enough anymore, plus it is old and not suitable for them to eat. I have now dumped four types of blanched veggies in there - carrot, spinach, courgette and peas.
The problem is they don't seem to notice the veggies at all. They swim right past where I have placed the food and just don't stop to eat. I am now worried they will starve because they don't seem to know this is food! Has anyone ever had this problem with otos?
Water parameters as of this morning are just fine - ammonia 0, nitrite 0, pH 7.6, nitrate 40 (is naturally high), temp 26 degrees celsius (79 fahrenheit).
Any help much appreciated!