07-30-2012, 05:59 AM
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The forum automatically changed the youtube link to their own page...
Just search "Cardinal Spawning" on Youtube, you will see that video on the top results. It is a video of cardinal tetra spawn in community tank. Most eggs were picked off by other fish right away. No egg had survived due to strong lights the aquarium had. It is a proof that they can indeed spawn inside community tank without special care. Read the video description and you will see. Nothing special was done. They just spawned after a water change.