Greetings from a plant enthusiast with a fish question

[Samhain]

Hello,

I recently got into aquascaping and started experimenting with small plant-only tanks last december. Two days ago, I felt my biggest tank so far was ready for some fish, so I headed to my local shop, and settled on getting silvertip tetras using the aquarium coop care guide. The shop had a big tank with a single label for silvertip tetras and two types of fish that looked pretty distinct. I assumed that was the difference between males and females. I asked the clerk for 10 silvertip tetras, 4 males and 6 females. Keep in mind I'm good with plants but know very little about fish yet so I just let the clerk pick them.

Now that they've colored back up in my aquarium and that I looked up how to tell apart silvertip males and females, I see that I have 7 silvertips and 3 fishes that I really think are something else. If they were getting along I wouldn't mind at all and just leave it at that, but the three slightly larger probably-not-silvertips are constantly darting around the tank, bullying each other and scaring the actual silvertips into hiding. Could anyone here help me ID the bullies? I attached a picture, not very clear but that's really the best I can do right now.

• They have no clear silver tips
• Shorter dorsal fin
• Two bright horizontal stripes on the tail, a few bright dots on the side
• Not much of a black spot on the tail
• The shop had around 30 of these with a dozen silvertips, they were schooling and not aggressive at all

Any suggestions on how to handle them are appreciated, I'm not sure if I can accommodate them better or if I should return them to the shop. Thanks!

 

[Garren]

With the picture you have it is hard to tell but it looks like a Danio Dangila. If it is a Danio D they can get up to 6".

Edited April 23 by Garren

[Samhain]

I managed to find pictures of juvenile Danio Dangila, and they're very very similar (although I'm not sure how many fish look similar to this when they're young). Actually scratch that, I'm looking at more Danios, they look even closer to Giant Danios. There's no way my aquarium can accommodate 6" fish, so if that's the case, I'm going to have to catch them and talk to the shop. Thanks a lot!