There are more than 20,000 kinds of fish, all designed by the Creator to fit right into the particular part of the ocean, lake or stream where He has placed them. Like birds, animals and humans, they must have oxygen, and they get this from water, which contains a certain amount of dissolved oxygen. Water enters the fish’s mouth, and as it passes over the gills, the oxygen is absorbed into the bloodstream. Carbon dioxide is formed during the breathing process and released into the water.
There are two main kinds of fish. Most have bony skeletons supporting their bodies, but others, such as sharks, have no bones (except in their jaws). Instead, their bodies are supported by a covering of tough, gristly, elastic cartilage. Fish are slim and streamlined, but there are interesting exceptions that do not resemble fish as we think of them. These fish may look like seaweed, rocks, the muddy bottom of the ocean, and other things. Thus they are hidden from enemies and also able to surprise unwary sea life that becomes their food. These camouflages were designed by their wise Creator.
Tails and fins are for swimming and guiding through the water. Most tails are vertical, divided into two parts and are a fish’s source of power. But in a few, the tails are flat and solid. Working with the tail are the fins, some behind the gills, some underside or on the backs, and some near the tails. Each species has its own arrangement—some with “dorsal” fins running the full length of the backs and others with very small dorsals.
Then there are the important scales, acting as armor. However, some bullheads and most catfish do not have scales and instead have smooth, slippery skins. Scales usually cover the fish from head to tail, much like shingles over the roof of a house, overlapping in rows. They are hard, made of bony tissue and provide good protection for the flesh underneath. A fish’s age can be determined by counting the yearly rings on a scale, the same as with rings of tree trunks. This accurate method is still widely used today.
For most of us, everything beneath the surface of oceans and deep lakes is mysterious, but nothing is hidden from the Creator God: “Neither is there any creature that is not [visible] in His sight: but all things are naked and opened unto the eyes of Him with whom we have to do” (Hebrews 4:1313Neither is there any creature that is not manifest in his sight: but all things are naked and opened unto the eyes of him with whom we have to do. (Hebrews 4:13)). This reminds us that not only does the Lord God see every fish, but He also sees each one of us at all times and knows everything about us. How wonderful it is to trust in Him as our very own Saviour and know how real is His watchful, loving care!
(to be continued)
ML-05/01/2016