D. ROBERTS / SCIENCE PHOTO LIBRARY D. ROBERTS / SCIENCE PHOTO LIBRARY
Pearl gourami. X-ray of a Pearl or Mosaic gourami fish Trichogaster leeri, seen in side view. It has an oval, laterally compressed body (up to 11 centimetres long), a tapered head, very long anal fin and a dorsal fin normally held high. The pelvic fins are modified into two fibre-like structures used for touch and in courtship. Gouramis (subfamily: Trichogasterinae) are popular aquarium fishes. The Pearl gourami originates from Thailand, Malaysia and Borneo, and is one of the most beautiful labyrinthfishes. Magnification: x0.6 at 35mm size.
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