Here's a categorized summary of different guppy types and their distinguishing features, focusing on key traits like body color and tail shape:

I. Classification by Body Color
Wild Type (Gray Type)
Resembles original wild guppies with gray-brown bodies and natural tail fin patterns.
Golden Type (Yellow Variant)
Vibrant golden-yellow body without dark head spots, shimmering in bright light.
Albino Type (White Variant)
Translucent white body with faint blue or pink markings; eyes are bright red.
Metal Guppies
Metallic blue sheen on the front half of the body; darkens when water quality deteriorates (a natural warning sign).
Platinum Guppies
Covered in metallic gold or silver scales; dorsal fins sparkle like precious gems.
II. Classification by Tail Fin Shape
Grass Tail Guppies
Dense black dots cover the tail fin, resembling grass; paired with broad dorsal fins.
Mosaic Guppies
Tail fins feature intricate red, blue, black, and yellow patterns; origin traces back to Japan.
Tuxedo Guppies
Solid black or deep blue posterior half; clean, unmarked tail fins resembling formal attire.
Swordtail Guppies
Central tail fin indents with sword-like extensions above and below (common variants include double swords and top swords).
Crown Tail Guppies
Tail fins split into delicate rays, creating a regal, flowing appearance.
III. Recommended Specialty Varieties
Brazilian Red Fan Guppies
Flame-red, fan-shaped tails with pronounced folds; ideal for high-impact aquariums.
Snake Skin Guppies
Distinctive snake-like patterns across the body; hardy and beginner-friendly.
Hongyun Dangtou Guppies
Bright red heads with matching fin streaks; symbolize good fortune in Chinese culture.
Old Fashioned Guppies
Deep blue tail bases with multi-colored gradients; patterns mimic antique mosaics.
Note: Water parameters and care requirements vary slightly among breeds. Select based on your aesthetic preferences and experience level for optimal results.