Each endler guppy male has different pattern like a finger print, no specimen is identical to one another, those I've bought from Charles Zammit ( english stock) are more coloured orange and green but lack those big black spots, Nathalia's stock ( germany) havn't that intesive orange and green but in comparison have nice big black spots over the body and a nice well defiened lyre tail! I mixed 2 pairs from Charles and 2 pairs from Nathalia, so that to have a better outcome, stroger, with intensive colours, big black spot and a nice lyre tail too! 