Set a fair comparison
Use the same aquarium light, viewing angle, and background when comparing animals. A different lamp can change apparent saturation or opacity.
Do not evaluate one animal under a bright display light and another under room light. Keep photographs and live views consistent.
Look beyond one moment
Observe animals at different times and allow juveniles to mature before final selection. Color may be less developed in younger shrimp.
Avoid handling shrimp to place them in a grading container unless a carefully planned, low-stress process is necessary.
Record criteria and uncertainty
Write down what feature you are selecting and how you judge it. Keep commercial grade names separate from your own criteria.
Selection can change a line over generations, but outcomes vary. Do not promise offspring will match a single parent exactly.
Use these as general hobby references. Test your aquarium and confirm product guidance before making changes.