My literal dreams about fish tend to be so surreal I don't know how to put them into words...I often dream more in terms of emotions and events than in images.
Daydreams, however, are more concrete. Three at the moment, the first two of which I'm actively pursuing, and a third I'm still researching and kicking around ideas.
1. A long, narrow, Sumatran rice paddy biotope, either in a 12 gallon long or a home-built tank. Rice plants, crypts, emergent arrow root, mosses; microrasboras, Betta imbellis, MTS, and either shadow catfish or kuhli loaches. Will probably order glass and get building next week.
2.
@Naterjm You'll like these...A 29 gallon palludarium biotope of a Wyoming foothills spring creek. A little waterfall/mini riparian zone above with lots of native mosses, along with a lot of rockwork with desert plants, inhabited by a couple sagebrush lizards and/or boreal chorus frogs. Waterfall flows into a 10ish gallon pool with native water plants, plains killifish, a couple stonerollers and maybe a crawdad to keep the bottom clean, and lots of native inverts.
3. My 150g rainbow tank at the dentist office is heading into year four, and it's about time for a rebuild. The office manager and I are kicking around the idea of a native tank, centered around a few yellowstone cut-throat trout, schools of native minnows (sand shiners, red shiners, and longnose dace all rate highly), mountain suckers, and a couple crawdads. Tons of rockwork and current, of course, a chiller to keep it nice and cold (trout do not do well at room temp), the whole thing gigantically over-filtered. And some sort of system to facilitate massive, frequent water changes.