Harder is the java loaches... theyre all brown lol
Soba is the only girl, shes fatter with tiny tiny pectoral fins, but aside from that, her head is darker than her body stripes. One broad stripe followed by two narrow stripes that come to a point tell her apart markings wise.
Udon, a broad stripe followed by two narrow stripes that are rounded at the belly. Has a black spot on his pectoral fin. Also smaller yellow spots on the brown stripes.
Ramen, hes got a broken spot in the middle of his stripes only on one side, and larger yellow spots on his black.
Wormfish is solid brown all the way through, minimal white on the belly.
Wonton is lighter than wormfish but not near as golden as Lo Mein. Blurry lateral stripe.
Lo Mein is a subspecies of java, so hes different significantly. Golden brown with a distinct bold lateral stripe. White belly. Narrow face, slimmer body.