I feed mine Alage wafers and have used plant based food like Omega One floating Kelp Pellets and Hikari Cichlid Excel. Mine get an occasional pea but its main staple is pellet based foods. Ive tried romaine but since he never ate it as a young fish, he just wont touch it.
The temperature change may have stressed it out but likely wont kill him. But I would keep a close watch on him to make sure.
The temperature change may have stressed it out but likely wont kill him. But I would keep a close watch on him to make sure.