siamese fighting fish how to take care ofSimilarly, research has found that bettas are conscious of serotonin, dopamine, and GABA. There are many species in the genus Betta, the majority of which are very morphologically similar. Within Thailand alone there are twelve nominal species with new species being found out every 5–10 years. Past efforts to distinguish Betta species were based on observable morphology, but given their visible similarity, this strategy has masked much of the cryptic range in the genus. Recent speciation efforts have incorporated use of DNA barcoding to differentiate species, specially comparing the CO1 gene of the mitochondrial genome, resulting in new theories in regards to the relatedness between species and permitting for the development of new phylogenetic trees. B.