the main thing I have noticed is the eye color is duller here is the description for the L191 from planet catfish
This species has a dull (not red or orange) eye and a basic olive coloration that greys with age and, irrespective of age, black longitudinal stripes. Young fish show a white ring around the caudal peduncle, a windowed or clear caudal fin and white tips to the fins.
These fish are imported in all sizes and in a number of colour forms. Interestingly the colour of the eye varies from bright orange to dull red. Although described from Venezuelan material, the colour forms that have given rise to L027 are from different locations such as the Rio Tocantins, Xingú and Tapajos, Brazil. It appears that the juveniles of Brazilian populations have solid or plain as opposed to barred caudal fin rays. So, a juvenile with barred caudal fin rays is from Colombian or Venezuelan stock.