Fins may undergo a development.Logical formLearned from3 sentences. Fins may be used.Logical formLearned from3 sentences. Fin can be tapered.Logical formLearned from3 sentences. A (fin disc) can be diamond-shaped.Logical formLearned from3 sentences. Fins may carry balanced rudders.Logical formLearned from3 sentences. A tail can be with fins.Logical formLearned from3 sentences. A fin can be broad.Logical formLearned from3 sentences. Wire may be braced to a fin.Logical formLearned from3 sentences. An anal fin may have a spine.Logical formLearned from3 sentences. A fin may be mounted.Logical formLearned from3 sentences. A fin can be shallow.Logical formLearned from3 sentences. A fin can be generous.Logical formLearned from3 sentences. A (dorsal fin) may possess spines.Logical formLearned from3 sentences. A dorsal fin may have spines.Logical formLearned from3 sentences. Dorsal fins may break a surface.Logical formLearned from3 sentences.