In crater Lake Apoyo, similarly to Xiloá, we found two types of high-bodied fish, one breeding at smaller sizes and living in shallower habitats, and another breeding at bigger sizes and inhabiting deeper habitats.
In crater Lake Xiloá we found two types of high-bodied individuals, one with yellowish coloration breeding at smaller sizes and living in shallower habitats, and another type with both normal coloration (most abundant) and gold coloration individuals, which breed at bigger sizes and inhabit deeper habitats.
Most of these lakes are small and shallow in size, but they tend to connect to each other and grow into a large conterminous lake within the glacier ice.
There is depth segregation by size and sex; pregnant females are found in shallower water, above 1200-1500 m, while juveniles are found deeper.
A system is also available for collecting undisturbed bottom sediment from the field in shallow cylinders, fitted in size to the bottom of the mesocosm tanks.
For example, a hidden causal variable might have masked the effects of body size in shallow comparisons, if such a variable was fluctuating on timescales comparable to the divergence times of species or genera.
Species of comparable size occur in shallow coastal waters throughout the rest of the world, except in Europe and Antarctica.
Not far away, workers on their breaks shed their soiled protective suits as they stood in shallow blue plastic tubs the size of toddlers' wading pools.
Those that are placed in shallow waters are smaller in size and moored using only chains, while those in deeper waters use a combination of chains, nylon, and buoyant polypropylene.
They are usually egg-layers and often produce relatively small numbers of fairly large eggs for fish of their size, typically in shallow coastal waters, such as the seagrass meadows of Florida Bay.
