Wow, he's awesome I'd say 100% L190 with those red eyes except that spotted stomach is really throwing me. I'd post over at PlecoFanatics.com or PlecoPlanet.com. There's a guy over there with the screen name of Lornek8 that I bet knows for sure.
spotted belly would suggest L330 watermelon, the body pattern could be stripes, spots or a mix of both.
there are theories that watermelons can change from stripes to spots depending on conditions and environment