| 1. | The Bicoid, Hunchback, and Caudal proteins are transcription factors.
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| 2. | The dorsal and anal fins are distant from the caudal fin.
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| 3. | In juveniles, the upper caudal fin has a black tip.
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| 4. | Caudal disc slightly shorter than the shielded part of the head.
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| 5. | The caudal fin is asymmetrical with a moderately long upper lobe.
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| 6. | Though unrelated, this group contains inseminating species with caudal organs.
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| 7. | The terminal leaf-shaped caudal fin is short and deep.
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| 8. | A number of other inconsistencies were discovered in the caudal vertebrae.
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| 9. | The caudal peduncle and the tips of the fins are pale.
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| 10. | A blue stripe extends from the snout to the caudal fin.
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