sorry for the horrible grammar int eh previous post. The secodn rwo of "dots" are his next growth spurt patterns. Hybrids are really easy to follow thier "cycle". as the dots progress to the tail and increase in size his body shoudl be also increasing in size, beginnning with the tail fin increasing to a dis-proportionate size, then his mouth and head should grow. Once the "dots" reach a uniform size, the white skin below them should start to turn an ashen grey color, which is the second phase of his growth. His body should now become larger/stockier until the dark background fills to the tail. Once the white turns dark, and the dots become uniform, his growth spurt is over. you should also notice a 1/2"-1" growth in overall body length at this point if he is healthy and fed nutriously. He will then take a few weeks to recover adn collect energy (food) to prepare for the next cycle. This continues through thier adult life. This is my own opinion on the subject but if you watch you can tell when thier growth starts and stops. its pretty cool, imoo.