It's Magic
Actually a surprising number of CCA members were prey or predator species of fish in past lifetimes, the hallmarks of which are still in evidence in the nature of their forum posts. But for really tough questions, I always refer to the Encyclopedia Aquatica, an obscure and exceedingly rare 20 volume metaphysical work on the central dogma of freshwater husbandry (see some of my earliest forum posts for more on this). A short compilation of some of my favorite passages are attached below.
"Be as a river unto all."
—Freshwater Paradigms, Chapter 1, Volume I, Encyclopedia Aquatica
"Those who can do naught else go with the flow—rather, be the flow, spread wisdom as current does nutrients and dissolved oxygen".
—Transcendental Medication, Chapter IV, Volume XX, Encyclopedia Aquatica
"Prayers are of no use, but frequent water changes can work miracles".
— Transcendental Medication, Chapter IV, Volume XX, Encyclopedia Aquatica
"As in life and the planetary ecosystem, dynamic equilibrium is the ideal."
— Freshwater Paradigms, Chapter XV, Volume I, Encyclopedia Aquatica
"Creative dominion is thine".*
— Freshwater Paradigms, Chapter 1, Volume I, Encyclopedia Aquatica
* The corollary to this as is discussed in the venerable text is the converse, i.e., that the Keeper as the arbiter of fate may visit desolation and ruin upon the Kept and so uncreate, either willfully or more often involuntarily.
"Releasing captive spawns into the world is the aquarist's communion and the only redemption for keepers of wild fish."
— Freshwater Paradigms, Chapter II, Volume I, Encyclopedia Aquatica
"An aquarium is natural selection in a box. Evolution however, occurs on both sides of the glass". — Freshwater Paradigms, Chapter 1, Volume 2, Encyclopedia Aquatica
"As in nature, it is only successful breeders whom are ultimately relevant". —Freshwater Paradigms, Chapter II, Volume I, Encyclopedia Aquatica
"Free-swimming fry are an aquarist's crowning glory and ultimate validation of all that it entails". — Freshwater Paradigms, Chapter III, Volume I, Encyclopedia Aquatica
"Like sex, raising hybrids is best kept private and should never be for sale". — Reproductive Strategies, Chapter III, Volume XII, Encyclopedia Aquatica