Every carp angler has sat through a night of single bleeps, wound in at dawn to a bait that has not been touched, and wondered what on earth was going on. The alarm was telling you something; the trick is learning the language. This is what the sounds mean and what to do about each.
The single bleep
One bleep, the bobbin twitches and settles. Usually a fish, but not a fish taking the bait: a carp has swum into or over your line, brushed it with a fin, or picked up a free offering next to the hookbait. It can also be a bream, a tench, a coot diving, weed drifting, or the line settling after a cast. A single bleep every so often is good news: there are fish on the spot. A single bleep every two minutes all night is fish feeding on your bait and not getting hooked, and that is a rig problem.
The liner
A liner is a fish hitting the line somewhere between the rod and the lead, and it gives a quick lift or drop of the bobbin, sometimes a short run of bleeps, then nothing. On a tight line at range you will get liners from every fish that crosses the swim, and they tell you exactly where the fish are moving. Liners on a slack line usually mean the fish are very close to the rig. If you are getting them constantly, the fish are there and feeding, and it is worth asking whether your hookbait is presented where they are.
The drop-back
The bobbin falls to the ground and the alarm gives a few bleeps or a broken tone. A fish has picked up the bait and moved towards you, slackening the line. It is a take, and it is the take most anglers miss, because it does not sound like the screaming run everyone waits for. Wind down fast until you feel the fish and lean in. Fishing with a heavier bobbin or a swinger and setting the alarm to register drop-backs stops you sleeping through them.
The full run
A continuous tone, the bobbin up against the rod, line peeling off the freespool. A hooked fish. No need to strike; pick the rod up, engage the reel, and let the rod take the weight. If you are getting runs, the rig is doing its job.
When bleeps do not become bites
Constant single bleeps and liners with no runs means fish are on the spot and not getting hooked. Work through the causes in order.
- The hook. Blunt, or too big for the bait, or the wrong pattern for the presentation. Check the point, drop a size, or change the pattern.
- The hookbait. A bait that is too big for the fish present, too different from the free offerings, or buried in silt or weed. Try a wafter, a smaller bait or a pop-up over the debris.
- The rig. A rig that tangles, or does not turn, or is too short over a bed of bait for the way the fish are feeding. Lengthen it, or switch to one that resets itself. The complete rig guide covers each.
- The line. A tight line in the fish’s path spooks them; they bump it and leave. Slacken off, pin the line down with a back lead, or fish a leader that sinks.
- Small fish. Bream, tench and roach picking at a boilie register as bleeps. Go up in bait size or switch to a harder hookbait.
Telling the birds and the weed from the fish
A coot gives a fast, erratic run of bleeps and then the line goes solid or slack in a straight line; a diving bird pulls line steadily upward. Drifting weed gives a slow, steady tightening that does not stop. Fish are rhythmic: a knock, a pause, a knock. After a few nights you will know the difference without opening your eyes.
For setting the alarms and indicators so that they tell you all of this clearly, see the setup section of the bite alarms guide, and if fish are hooking and then coming off, hook pulls and how to stop them.
Last Updated on September 10, 2026 by Shane Stanford
Shane Stanford has fished for carp for over twenty years, in the UK and in France, and currently fishes a private syndicate water in West Sussex. He writes Fishing Again to put the things he learned the hard way into plain language: location and watercraft first, then bait, rigs and gear. He is straight about which kit he has actually fished and which he has assessed on specification, and says so on the page.
