Did you put all of these in 3.5 gallon tanks? And you do know that "clean up crews" only eat leftover food; not poop? Some have that mistaken impression so I always like to ask.
I also like to think we care as much about tank mates as we do our Betta and also provide *them* with a proper environment. I know you said you have more tanks so I am sure you have plans to move them up. But don't keep in small tank too long or the result is stunted growth, deformities and death.
For those considering any of these fish as tank mates, note the following information taken from scientific species-specific studies. The information is not from social media opinions. Do not depend on pet stores to give you proper information.
Absolute minimum tank size 23 x 12 inches (60 x 30 cm) or approximately 10 gallons
As with all Hillstream Loaches, they come from fast-flowing streams and need good water flow/current and highly-oxygenated water. Do not do well, long-term, in low-flow tanks
Shoaling; need minimum number of six. As with most shoaling varieties, when not in a proper shoal they tend to become withdrawn and often sicken from the stress.
Minimum tank size 32 x 12 (80 x 30) or a 20 gallon long
Fine sand substrate to avoid injury
Need varied diet; cannot survive on "leftovers"
Shoaling; need minimum of six for optimum health and longevity.
"Dwarf Sucker Mouth"
If by this you mean Otocinclus:
Minimum tank size (see BF Loach)
Sand substrate preferred but not totally necessary
Feeds primarily on algae; needs diet of both fresh (blanched cucumber, zucchini, etc.) and dried (algae wafers) food (I buy seaweed sheets and clip to side of tank)
Shoaling; need minimum of six for optimum health and longevity. Very shy and needs shoal for a sense of security. Will let other fish out-compete it for food.
If your dog thinks you are the greatest do not seek a second opinion
Last edited by RussellTheShihTzu; 12-29-2019 at 01:03 AM.
Reason: Species profiles added