Easy Care Saltwater Fish: The Yellow-Headed Jawfish
Back in the early days of the marine aquarium hobby (the 1950s), there was a limited choice in saltwater livestock. It's hard to believe now, but there were nary any reefkeepers - in fact, the number of invertebrates offered for sale could be counted on two hands. Fish selection wasn't much better, with most offerings coming out of the tropical West Atlantic. These included some hamlets ( Hypoplectrus spp means "mouth," referring to their receding jaws). These characteristics and their enormous all-seeing eyes make them unmistakable. Another more distinguishing characteristic is their bodies being covered with cycloid scales, though their heads are "naked" of scales, spines and other processes. This feature aids them in their continuous burrowing.
The one trait that separates opistognathids ) is one of the most popular aquarium fish collected in the tropical West Atlantic. It deserves its status as the most-collected-and-kept jawfish species. It has a light blue anterior, grading to creamy white and yellow toward the front half; it spends more time outside of its tunnels than other jawfish once established. This species grows to 4 inches in length.
The yellow-headed jawfish spends 99 percent of its time either all the way in its burrow or with just part of its head exposed. Even if you provide the correct peaceful settings and give them conspecific tankmates, most individuals continue to be secretive. About the only time the aquarist generally sees a jawfish all the way exposed is during feeding sessions or territorial displays. In fact, it is not uncommon for jawfishes to do as symbiotic pistol shrimp and goby combinations do: close off the openings to their burrows at night, and even during the day, if they don't want to be disturbed.
If your jawfish go missing for days, don't overreact and imagine the worst - and definitely don't start taking the tank apart. Jawfishes can easily go a week to 10 days without feeding. More often than not, they're still there, hiding and doing whatever it is fish do when they want to remain out of the limelight. And if indeed the worst has occurred, their mass is small enough that scavengers and decomposers will clean up the remains without incident.
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Incubating males are provided with pieces of PVC pipe for habitat. The greatest and most common problem occurs with providing sufficient food to the young once their small yolk sacs are absorbed after two to three days. Many early attempts involved
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Earthquake Preparedness
Earthquake - be prepared
If you are indoors when shaking starts:
DROP, COVER AND HOLD ON. If you are not near a strong table or desk, drop to the floor against an interior wall and cover your head and neck with your arms.
Avoid windows, hanging objects, mirrors, tall furniture, large appliances and cabinets filled with heavy objects.
Do not try to run out of the structure during strong shaking.
If you are downtown, it is safer to remain inside a building after an earthquake unless there is a fire or gas leak. There are no open areas in downtown San Francisco far enough from glass or other falling debris to be considered safe refuge sites. Glass from high-rise buildings does not always fall straight down; it can catch a wind current and travel great distances.
If you are in bed, stay there and cover your head with a pillow.
Do not use elevators.
If you use a wheelchair, lock the wheels and cover your head.
Once the earthquake shaking stops:Check the people around you for injuries; provide first aid. Do not move seriously injured persons unless they are in immediate danger.
Check around you for dangerous conditions, such as fires, downed power lines and structure damage.
If you have fire extinguishers and are trained to use them, put out small fires immediately.
Turn off the gas only if you smell gas.
Check your phones to be sure they have not shaken off the hook and are tying up a line.
Inspect your home for damage.
WaterIn a disaster, water supplies may be cut off or contaminated. Store enough water for everyone in your family to last for at least 3 days.
Store one gallon of water per person, per day. Three gallons per person per day will give you enough to drink and for limited cooking and personal hygiene. Remember to plan for pets.
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