Trailers/streamers

[jag123]

Got a question I have been debating:

Why do some cichlids/fish have long streamers/trailers on their fins?

I know in cichlids this can vary by species and is sometimes seen in males. I want to see if anyone has dug up any articles or info on this.


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[jag123]

Lets hear some opinions.


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[elisuwe]

My male con has really long streamers, don't know why looks sweet though My GT also had slight streaming

 

[Azedenkae]

Thorichthys ellioti has long streamers.

 

[Breid22]

Usually the dominant males have the longest ones


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[Mythic Figment]

Usually the dominant males have the longest ones


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+1

Many dominant fish (male or female depends on species) will develop long streamers/trailers. Not entirely certain why it happens, but my hypothesis would be that it is the indication to others of their species that they are the dominant fish and also to possibly signal to members of the opposite that they are of good breeding quality.


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[jag123]

+1

Many dominant fish (male or female depends on species) will develop long streamers/trailers. Not entirely certain why it happens, but my hypothesis would be that it is the indication to others of their species that they are the dominant fish and also to possibly signal to members of the opposite that they are of good breeding quality.


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I really like this theory. Makes sense that sexual selection plays a role.

What about other theories such as using the fin extensions as a sensory apparatus? Sort of like catfish whiskers feeling around for movement of other fish or food items.


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[elisuwe]

I really like this theory. Makes sense that sexual selection plays a role.

What about other theories such as using the fin extensions as a sensory apparatus? Sort of like catfish whiskers feeling around for movement of other fish or food items.


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I don't think that is the case

 

[decoy50]

+1

Many dominant fish (male or female depends on species) will develop long streamers/trailers. Not entirely certain why it happens, but my hypothesis would be that it is the indication to others of their species that they are the dominant fish and also to possibly signal to members of the opposite that they are of good breeding quality.


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To take this thought a step further, streamers & tail fins are usually the first thing to get nipped & shreaded during fights. A specimen with perfect fins & long streamers might indicate that its the dominant fish & nobody messes with it.

 

[jag123]

To take this thought a step further, streamers & tail fins are usually the first thing to get nipped & shreaded during fights. A specimen with perfect fins & long streamers might indicate that its the dominant fish & nobody messes with it.

Nice insight! Thanks and lets keep the thoughts rolling. If anyone has dug up any articles on this subject please share.


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