ApH between 6.0 and 7.8 is acceptable for most tetras. As these guys are tropical fish they need warmer water: a temperature somewhere between 74 and 82 degrees Fahrenheit is recommended. Since these fish are freshwater you do not have to worry about the salinity of your tank. Thewater lettuce is a tropical plant and this means that it needs a lot of light and heat. The water needs to be around 60 degrees and the surface temperature needs to range from 70 to 80 degrees Fahrenheit and these numbers have to be constant. Also Check: Pothos In Fish Tank. Afew fish you might consider for a mini aquarium are: Bloodfin tetra: tolerant of cool water, best if kept in a school of three or more fish. Zebra danio: very hardy, they tolerate cooler temperatures fairly well. Betta: Great for mini aquariums, but only one per tank; can be mixed with other small fish species. Whatyou see is what you get with fish 10cm/4" and larger. When buying smaller look more for good shape and activity. Buy those constantly looking for food and allow them to develop into what they are. Avoid shy fish and always ask to see the fish feeding before buying. Take home a group, unless adding to a collection or buying a breeding pair. ReportHighlights. Two out of every three American homes includes a pet. Of the 393.3 million pets live in the United States, most are dogs, cats, and fish.. 85 million or 67% of American homes include a pet.; 95% of American pet owners consider their pets to be family members.; Freshwater aquarium fish are the most popular pet, with 139.3 million of them nationwide. Fn7FZd8.

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