What kind of fish is this?

[AydenLincoln]

I think one is a little goby and what’s the one on the glass? It looks like a suckerfish or a remora but I don’t think that’s right. These tanks are so tiny why do people keep fish in them? https://www.instagram.com/reel/CqQbsSsLeyI/?igshid=YmMyMTA2M2Y=

 

[Sharkbait19]

Maybe a neon or sharknose goby - hard to tell without a side profile.