Thanks! I kinda figured it would be; they are so small! The shark investigates when I put more in the tank, he's like the grumpy landlord. But none of the Danios have suffered the wrath of his nature thus far; it's almost like they are too exhausting for him to bother chasing. I've done extensive research over the last year and half, but there are so many mixed opinions. In the beginning, I was told that my Neon Tetras would be great tank mates (from several sources on the internet, AND the people at multiple pet stores), but I only have 2 left now out of 6. When I finally realized the shark was the culprit, I put the Tetras over into the 10 gallon tank with the baby Danios when the babies were finally a size they wouldn't get eaten.
More research says that a small school of Neon Tetras can comfortably live in a 10 gallon aquarium since they aren't very active, so I am going to get more of them to accompany the two already in there. I just hate small tanks and the amount of care they require, so I am still eventually going to get another 55 gallon tank for my business. That way, the Neon Tetras will have a bigger home again with better tank mates, and without a menacing monster trying to make an easy meal of them.
Next question: Do you think that with all 24 Danios and the Rainbow Shark, that I could still comfortably fit a small school of Rainbow Fish? I've been trying to find a species that can get along with the Shark besides the Danios, and from what I've read, these colorful beauties are the ideal choice. I know 55 gallons is large, but I want them to all be comfortable. Should I wait until I get the second tank and divide the Danios into two schools of about 12, or should they all be okay in their together?
I know I'm speaking in paragraphs more than questions, but I just want to be thorough about the situation so I get accurate advice. Thanks!