why do they sell them? - Tropical Fish Keeping - Aquarium fish care and resources
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post #1 of 6 Old 09-09-2018, 11:32 PM Thread Starter
why do they sell them?

I saw a black knife fish that was interesting looking in a 10 gallon tank at a pet store. I wasn't about to buy it without knowing something about it. When I got home and did a little research, I found out they they can get 18" long and the minimum tank volume is 150 gallons. Why do they sell them??
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post #2 of 6 Old 09-10-2018, 04:49 AM
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Because some people have the capability to care for them. A 150g isn't *that* big - its not like its over 200g, a 150g is still commonly sold in most petstores or can be ordered.

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I've never had any problems with 'Impulse Buying'. They're just animals that I forgot I had planned to get.
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post #3 of 6 Old 09-10-2018, 11:20 AM Thread Starter
Yes I guess it is the responsibility of the buyer to know what the species will require.
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post #4 of 6 Old 09-22-2018, 05:55 PM
I think fish grow to fit their tank. Like you said, they "can" grow to that size! I have two black moor fish in a 40 gal tank with only one Cory. The black moors started at only a couple inches and are now about 8 inches long and quite thick as well. If I had more fish in there, I'm sure they would not be that big!

Just a thought!
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post #5 of 6 Old 09-24-2018, 10:36 AM
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Well, they can’t grow bigger than the tank....

It is not clear if there is a perceivable negative impact to having a fish’s growth stunted. There’s a lot of anecdotal evidence on both sides.

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post #6 of 6 Old 09-28-2018, 12:35 AM
Your last post immediately reminded me of George Carlin's joke about "stuff." Ha ha!
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