This fin variety most closely resembles wild betta splendens, as long tails and the subsequent tail types were all selectively bred by human intervention. These fish are often mistaken for female bettas, who generally have shorter fins, but this is an entirely different variety of betta.Males can be distinguished by females by their longer ventral fins, more pointed/angled anal fin, and slightly different body shape.ouble Tail. A fin type in which the caudal (tail) fin is split into two lobes instead of one. This is a genetic trait, and the same genetics that cause this double-tail cause the dorsal and anal fins to be very broad and the body to be shorter, which predisposes these fish to swimbladder problems.
Oxygen = three ions each with a charge of -2 = 3 x -2 = -6. The overall charge of the polyatomic ion is -2. This means that the oxidation number of the carbon must be +4. Total charge = +4 + -6 = -2. Here is a video which discusses this topic by discussing how to determine oxidation numbers of elements in the bicarbonate and dichromate ions. Video from: Noel Pauller.
1 Conjugate Acids and Bases: When an acid dissociates e.g. carbonic acid (H2CO3) it automatically produces a base, in this case a bicarbonate ion (HCO3-). 2  The same is true when a base accepts a hydrogen ion.3  These are called conjugate acids and bases. Conjugate Acids and Bases: When an acid dissociates e.g. carbonic acid (H2CO3) it automatically produces a base, in this case a bicarbonate ion (HCO3-). 2  The same is true when a base accepts a hydrogen ion. 3  These are called conjugate acids and bases.