I kept telling myself I would buy fish only if my red cherry shrimp colony is around 50 individuals adults to ensure the population would grow despite some predation. There are only around 8 adults and twice as many juveniles. 

Then yesterday, the fish store posted on their social media that ember tetras and green neon tetras - two shrimp safe fish - are back in stock. 

I immediately went on a 1.5 hour trip. When I arrived, I found that kubotai rasbora are also available, so I figured my 20 gallon heavily planted high tech tank with canister filter could handle 8 of each. No celestial pearl danio but that's okay. 

I have been observing them for hours. They school, they eat, they explore the tank. More importantly, they do not seem to be interested in the shrimp at all. I saw a juvenile only a few grains of sand long hanging by the wall eating algae. The fish took a look and swam away. There are more juveniles and probably newly hatched shrimp in the pearlgrass carpet and the fish do not force their way in. 

I guess I could breathe a sigh of relief knowing my shrimp population is probably safe. 

Also, the fish seem be fine with the CO2 injection. They did not stay at the top gasping for oxygen. The spray bar worked, I suppose. 

Overall, I am very happy that despite my impulse buy, there appears to be little problem. And that is that the midground plant ludwigia white which seems to be decaying slowly is blocking their swimming. I will replace it with a lower plant. Eriocaulon sp vietnam probably. Would be nice in front of a bush or rotala blood red SG. 

Impulsively Bought Some Fish for My Shrimp Tank