Ok I have had Merlin my betta for approx 3 weeks in a 2.5g minibow aquarium with a whisper filter on the lowest setting. Lately everytime I approach the aquarium Merlin has been hiding behind the filter or underneath it or in his plant. He comes out for his bloodworms and that is it. He doesn't swim around like my other betta. My other betta is in a 3g eclipse tank he is friendlier comes up to the glass to greet me. Merlin seems afraid of me. I was thinking about moving him into my 5g once my platies transfer to my 36g. I have the same type of filter on the 5g a whisper. I am not sure what is wrong with Merlin he looks healthy he is eating his bloodworms. His tank is still cycling maybe the nitrite is bothering him the level is 0.25 and I am doing regular water changes. Who knows is just upsetting me because my other betta never acted like this. Anyone have a clue what could be going on am worried?:huh: