Can Siamese fighting fish Live With Neon tetra?

Detailed assessment

Both Siamese fighting fish and Neon tetra share a comfortable temperature range of 24–25°C (Siamese fighting fish prefers 24–30°C, Neon tetra prefers 21–25°C). Their pH ranges overlap well at 6–7, so water chemistry is compatible. Siamese fighting fish has a temperament score of 5 (out of 10), which means it can be territorial or aggressive toward Neon tetra (score 1). The size difference is significant: Siamese fighting fish reaches 6.5 cm while Neon tetra reaches only 2.5 cm, and the larger species may view the smaller one as prey. Note: fish 2x+ larger may eat smaller tankmates With careful monitoring and adequate tank size these species can usually coexist, but be prepared to separate them if aggression or stress appears.