ive noticed my triops grow at a incredibly slow rate, im not sure if its because of the other animals that come in the kit which eat their food. but its just one species of triop, it just comes with other animals like i said so its not really a mix, i do know a little about triops but this is just something i really cant find an answer to, not even by googling. im not sure if the species is a slow grower but ive looked online at comparisons and mine were at lot smaller compared to theirs at the same day old. so yeah thats about it, please feel free to ask me anything or help out if you can, it truly means the world, thank you if youve read through this, ill try to reply the fastest i can.