Bent dorsal fins in angelfish can be caused by several factors, including poor water quality, inadequate diet, and stress. High levels of ammonia, nitrites, or nitrates in the water can lead to health issues, resulting in deformities. Additionally, nutritional deficiencies may impact their growth and fin development. Stress from overcrowding, aggressive tank mates, or sudden environmental changes can also contribute to this condition.
There are two Dorsal fins on a perch. The anterior and posterior Dorsal fins.
A survey documented wild males orcas have fins bent. No one is exactly sure why the dorsal fins of killer whales bend, but it may have to do with genetics, injuries, or because the fins can be taller than many humans without any hard bones or muscles for support.
Porpoises have triangular dorsal fins (as opposed to the curved dorsal fins of dolphins and whales). Some species of porpoise have small bumps on their fins, but the purpose of these bumps is unknown.
Sharks have straight dorsal fins, dolphins have curved dorsal fins and whales don't have dorsal fins :)
Angelfish release gas with their fins.
Yes, giant cat fish do have dorsal fins.
dorsal fins
Shark dorsal fins are typically straight and rigid, while dolphin dorsal fins are curved or falcate. This difference in dorsal fin shape is one of the visual cues you can use to differentiate between sharks and dolphins in the wild.
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An angelfish!
By its fins
Sharks with two dorsal fins are distinguished by their double dorsal fins, which is a unique characteristic not found in other shark species.